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R1 = 1/16, R2 = 1/10 and R3 = 1/20 so when tey work together R = R1 +R2 + R3 R = 1/16 + 1/10 + 1/20 =( 20 + 32 + 16)/320 = 68/320 so the time taken to finesh the work is 320/68 = 4. 705 minutes approx here you are using rate of work topic

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A man saved Rs 16500 in 10 years. In each year after the first year he saved Rs 100 more than he did in the preceding year. How much did he save in the first year?

Posted by Lucifer?? Morningstar?? 5 years, 6 months ago

CBSE > Class 10 > Mathematics

2 answers

Arun Patel 5 years, 6 months ago

sum of AP = n{ 2a + (n-1)d}/2 = 10{2a + (10 - 1)100}/2 so 16500 = 5 {2a + 900} 3300 = 2a + 900 3300 -900 =2a 2400 =2a 2400/2 =a a = 1200 so he saved Rs 1200 in the first year 1650 - 900 = 2a 7

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? Pranali.A.P ? 5 years, 6 months ago

Second installment= a + 100 Third installment = a+100+100 The sum of his saving every years Sn=n/2[2a+(n-1)d] a=first term for the given A.P d=common difference of the given A.P n= number of terms n=10 S10 =10/2[2(a)+(9)(100)] 16500=5[2a+(9)(100)] 16500 =10a=4500 16500-4500=10a 12000=10a a=12000/10 Solving for a 10a=12000 a=12000/10 a=1200

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Bbc compacta solutions of class 10th

Posted by Kavya Singla 5 years, 6 months ago

CBSE > Class 10 > English Language and Literature

0 answers

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●Two APS have the same common difference the difference between there 100th term is 100 ,what is the difference between their 1000th terms?

Posted by Sumit Gupta 5 years, 6 months ago

CBSE > Class 10 > Mathematics

5 answers

Lucifer?? Morningstar?? 5 years, 6 months ago

Give my answer

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Lucifer?? Morningstar?? 5 years, 6 months ago

a1000–A1000 = a+999d–A-999d = a-A=100 using eq(1)

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? Pranali.A.P ? 5 years, 6 months ago

Two APs have the same common difference. The difference between their 100th terms is 100, what is the difference between their 1000th terms? BE/BTech at Thapar Institute of Engineering & Technology. 100 Solution Let the difference be d And the first term of AP1 be a1 And AP 2 be a2 100th term of AP1 is a1+99d……(.1) 100th term of AP2 is a2+99d……(2) As per ques eq1 - eq2=100 i.e a1-a2=100 Now 1000th term of AP1 is a1+999d……(.3) 1000th term of AP2 is a2+999d……(4) Eq3-eq4=100 i.e a1-a2=100 So answer remains constant=100

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? Pranali.A.P ? 5 years, 6 months ago

Answer is 100

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Lucifer?? Morningstar?? 5 years, 6 months ago

Let the first term be a and A of two APs respectively. a100–A100=100=> a+99d–A–99d=100 => a–A=100...(1)

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A concave mirror is which type of ray of light

Posted by Jaisri Ram 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

Namrata Jindal 5 years, 6 months ago

Converging

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? Pranali.A.P ? 5 years, 6 months ago

A ray of light is incident on a concave mirror.

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Why did Nathu Ram godse kill mahatma gandhi???

Posted by Lucifer?? Morningstar?? 5 years, 6 months ago

CBSE > Class 10 > Social Science

4 answers

? Pranali.A.P ? 5 years, 6 months ago

Gandhian ideas of pacifism and nonviolence. Unable to vanquish the ideas which Godse thought was emasculating the Hindus and turning them effeminate, he killed the man who propagated them.

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Lucifer?? Morningstar?? 5 years, 6 months ago

Then give me right answer.

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? Pranali.A.P ? 5 years, 6 months ago

Sorry i think this answer is wrong am not Shure ?

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? Pranali.A.P ? 5 years, 6 months ago

Some of these motivations were: Godse felt that the massacre and suffering caused during, and due to, the partition could have been avoided if Gandhi and the Indian government had acted to stop the killing of the minorities (Hindus and Sikhs) in West and East Pakistan.

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Why lencho write a letter to God?

Posted by Mousumi Soren 5 years, 6 months ago

CBSE > Class 10 > English Language and Literature

2 answers

Sebin Eapen 5 years, 6 months ago

Because his field was completely destroyed and he had complete faith in God.

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? Pranali.A.P ? 5 years, 6 months ago

Lencho wrote the letter to God as he thought that he would be the only one to help him in his bad times. He wrote a letter addressing to God to send him 100 pesos so that he and his family can survive in such a difficult situation. ... He had faith in God.

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Why small babies are irritating ??

Posted by Seraj Ali ??? #Srhmk 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

Anushka ?? 5 years, 6 months ago

Because they don't know what to do and what to not do

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Suryansh Singh 5 years, 6 months ago

They r new 2 world that's why..

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Describe the transportation in human.

Posted by Lucifer?? Morningstar?? 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

? Pranali.A.P ? 5 years, 6 months ago

The main components of the transport system in human beings are the heart, blood, and blood vessels. a. Heart pumps oxygenated blood throughout the body. It receives deoxygenated blood from the various body parts and sends this impure blood to the lungs for oxygenation

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A man repays a loan of Rs 3250 by paying Rs 20 in the first month and then increasing it by Rs 15 every month. How long will it take him to clear the loan?

Posted by Lucifer?? Morningstar?? 5 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

? Pranali.A.P ? 5 years, 6 months ago

Here, a = 20, d = 15 (As payment increases by Rs. 15) and S(n) = 3 We know that, S(n) = n/2[2a + (n - 1)d] Putting all the values, we get ⇒ 3250 = n/2[2 × 20 + (n - 1) (15)] ⇒ 3250 × 2 = n[40 + 15n - 15] ⇒ 6500 = n[25 + 15n] ⇒ 1300 = n[5 + 3n] ⇒ 3n² + 5n - 1300 = 0 ⇒ 3n² + 65n - 60n - 1300 = 0 ⇒ n(3n + 65) - 20(3n + 65) = 0 ⇒ (n - 20) (3n + 65) = 0 ⇒ n = 20, - 65/3 (As n can't be negative) ⇒ n = 20 Hence, men will take 20 months to clear the loans. Read more on Brainly.in - https://brainly.in/question/1598066#readmore

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Why do we need to conserve mineral resourcess ?

Posted by ? Pranali.A.P ? 5 years, 6 months ago

CBSE > Class 10 > Social Science

4 answers

Vaibhav (Silent Love)?? Avi 270505??? 5 years, 6 months ago

Hi prananli

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Vaibhav (Silent Love)?? Avi 270505??? 5 years, 6 months ago

Conservation of mineral resources is essential because they are a country's valuable possession. Some methods by which we can conserve minerals are: Minerals should be used in a planned and sustainable manner. ... Recycling of metals also results in the conservation of mineral resources.

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? Pranali.A.P ? 5 years, 6 months ago

Thank u

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Lucifer?? Morningstar?? 5 years, 6 months ago

Mineral resources are country's valuable possession.Rampant exploitation of fossil fuels and non-renewable resources like coal and petroleum can lead to an energy crisis. ... Therefore, we need to conserve mineral resources.

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What is the main role carbon in daliy life

Posted by Sumit Mishra Ji 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

? Pranali.A.P ? 5 years, 6 months ago

These are used in many modern products including inks, rubber, steel, pencils, and more! Tens of millions of artificial carbon compounds are useful for petroleum (gasoline) and plastics. Carbon is the essence of life on Earth. It's a very important element

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Lucifer?? Morningstar?? 5 years, 6 months ago

The food we eat contains an important source of energy which we call carbohydrates. Carbohydrates are nothing but elements of carbon itself.

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How does the ph of water change when lemon is squeezed in it

Posted by Deepak Koundal 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

Lucifer?? Morningstar?? 5 years, 6 months ago

It get acidic in nature.

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Describe Mandela as an icon of anti apartheid struggle

Posted by Deepak Kumar 5 years, 6 months ago

CBSE > Class 10 > English Language and Literature

1 answers

? Pranali.A.P ? 5 years, 6 months ago

Apartheid is a political system. It is based on racial discrimination. It causes great harm to a society and a country. It results in racial conflicts and discrimination. In south africa it caused much suffering to the black native people. They were not allowed any kind of freedom. They were not treated like 'outlaws'. They could not fulfill their obligations towards their family. They were cruelly treated by the white people. But apartheid has another effect also. It makes people learn to overcome fear. It produces people of great character, courage and generosity. In south africa it produced great men like Nelson mandela, oliver tambo, walter sisulu, cheif luthuli, bram fischer and robert sobukwe.

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If -4 is the zero of polynomial x^2-2x-7p^3 ,find the value of p

Posted by Anas Shaikh 5 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

Lucifer?? Morningstar?? 5 years, 6 months ago

16+8=7p³ => p=³√24/³√7

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How can we find probability

Posted by Vaibhav Vaid 5 years, 6 months ago

CBSE > Class 10 > Mathematics

1 answers

? Pranali.A.P ? 5 years, 6 months ago

To calculate probability, you will need to divide the number of events, or what you want to calculate, by the number of possible outcomes, or how many total options there are.

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HCF of 657 and 495 describe

Posted by Maya Dadaliya 5 years, 6 months ago

CBSE > Class 10 > Mathematics

0 answers

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Why Amanda was sad

Posted by Anushka ?? 5 years, 6 months ago

CBSE > Class 10 > English Language and Literature

3 answers

Anushka ?? 5 years, 6 months ago

Thanks both of U ?

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Lucifer?? Morningstar?? 5 years, 6 months ago

This constant nagging has made her so sad that she has even stopped to imagine herself as someone else. She used to do so in order to escape from the continuous harassment and dominance of her parents

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? Pranali.A.P ? 5 years, 6 months ago

At this time the poet has not written any reaction from Amanda's side. This constant nagging has made her so sad that she has even stopped to imagine herself ...

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Which method plants are used to get rid the waste out of the plant body?

Posted by Drift? Boi? 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

Lucifer?? Morningstar?? 5 years, 6 months ago

Transpiration, remove it's waste in form of resin and gum and through stomata to exhale O2

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Anushka ?? 5 years, 6 months ago

Transpiration, through leaves,roots

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How did the rain change and what happened to Lenchos fields

Posted by Amruta Kulagod 5 years, 6 months ago

CBSE > Class 10 > English Language and Literature

5 answers

Anushka ?? 5 years, 6 months ago

Storm*stones sorry for the mistake

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? Pranali.A.P ? 5 years, 6 months ago

After a sudden gust of wind had begun to blow and very large hail stones began to fall along with the rain . Thus the rain changed. Lencho's field was totally destroyed by the hailstones. The flowers were gone from the plants and the corn was totally destroyed .

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Drift? Boi? 5 years, 6 months ago

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Anushka ?? 5 years, 6 months ago

☺️☺️ I hope it is sufficient

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Anushka ?? 5 years, 6 months ago

Rain changes into hailstorms and his field was totally destroyed

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Is Griffin was a great scientist ? And for what purpose he use his experiments.That are good or bad

Posted by Anushka ?? 5 years, 6 months ago

CBSE > Class 10 > English Language and Literature

5 answers

Anushka ?? 5 years, 6 months ago

Thanks ☺️

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? Pranali.A.P ? 5 years, 6 months ago

Griffin is a scientist whose research in optics and experiments into changing the human body's refractive index to that of air results in him becoming invisible. After becoming invisible, he wraps his head in bandages and dons a pair of goggles or glasses in order to enable others to see him. Unable to reverse the invisibility process, he descends into insanity and becomes a criminal

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Anushka ?? 5 years, 6 months ago

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Anushka ?? 5 years, 6 months ago

Yes I know

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Drift? Boi? 5 years, 6 months ago

Last question of board paper (10th)

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Why do you think average income is an important criterion for development . Explain

Posted by ? Pranali.A.P ? 5 years, 6 months ago

CBSE > Class 10 > Social Science

3 answers

? Pranali.A.P ? 5 years, 6 months ago

Thanks?

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Vaibhav (Silent Love)?? Avi 270505??? 5 years, 6 months ago

It is an important criterion because it tells us what an average person is likely to earn and also gives some idea about the rising standard of living. Prosperity of a country depends not only on its national income but also on the number of people who would share it

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Meghna Thapar 5 years, 6 months ago

In the broadest sense, per capita income matters because it serves as a measurement of the stability and wealth within an economy. Per capita income is a ratio of the amount of all a region's income divided by its population. Average income represents the total income of a country keeping in view of the total population. ... this indeed is a better indicator of the living conditions of the people living in a country and could help in knowing their contribution. their contribution is the key to development. Hence, average income is an important criterion because it tells us what an average person is likely to earn and also gives some idea about the rising standard of living. Prosperity of a country depends not only on its national income but also on the number of people who would share it.

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Periodic classification of elements with date

Posted by Mohd Qasim 5 years, 6 months ago

CBSE > Class 10 > Science

1 answers

? Pranali.A.P ? 5 years, 6 months ago

Periodic table is a chart of elements prepared in such a way that elements having similar properties occur in same vertical groups. According to Mendeleev's periodic law, Properties of elements are periodic functions of their atomic masses. In this, there are seven periods and eight groups.

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Write the theme of the poem 'Fire and Ice' .

Posted by Arjun Singh 5 years, 6 months ago

CBSE > Class 10 > English Language and Literature

1 answers

Arjun Singh 5 years, 6 months ago

We find that the poet gives us a very beautiful message , to be far away from hatred and jealousy and live together with love.He warns us that if we don't do so , the world will face more trouble than that caused fire and ice.

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Difference between tropical and evergreen forest

Posted by Anushka ?? 5 years, 6 months ago

CBSE > Class 10 > Social Science

2 answers

Anushka ?? 5 years, 6 months ago

Thanks but not sufficient ?

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Drift? Boi? 5 years, 6 months ago

Tropical forest are those forest not having trees on large scale and does not dense forest but in the case of Evergreen forest having large area comparison to tropical forest and it is is very dense forest. ?

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Difference between potential energy and potential difference

Posted by Anushka ?? 5 years, 6 months ago

CBSE > Class 10 > Science

2 answers

Anushka ?? 5 years, 6 months ago

थैक्यू ?

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Lucifer?? Morningstar?? 5 years, 6 months ago

Electric potential energy Ue is the potential energy stored when charges are out of equilibrium (like gravitational potential energy). Electric potential is the same, but per charge, Ueq. An electric potential difference between two points is called voltage,

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Iron ore is which type of resources

Posted by Aniket Rajputana 5 years, 6 months ago

CBSE > Class 10 > Social Science