CBSE > Class 07 > Mathematics | CBSE Board | Homework Help

P = Rs. 7000
R = 3.5% p.a.
T = 2 years
{tex}\therefore{/tex} Interest to be paid at the end of the second year
= {tex}\frac{P R T}{100}=\frac{7000 \times 3.5 \times 2}{100}{/tex}
= Rs. 490
A = P + I
= Rs. 7000 + Rs. 490
= Rs. 7490
Hence, the amount to be paid at the end of the second year is Rs. 7490

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ANSWER

Rs. 6,050 is borrowed at 6.5% rate of interest p.a.. Find the interest and the amount to be paid at the end of 3 years.

Posted by Gurleen Kaur 6 years, 6 months ago

CBSE > Class 07 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

P = Rs. 6050
R = 6.5% p.a.
T = 3 years
{tex}\therefore{/tex} Interest to be paid at the end of 3 years.
= {tex}\frac{P R T}{100}=\frac{6050 \times 6.5 \times 3}{100}{/tex}
= Rs. 1179.75
{tex}\therefore{/tex} Amount to be paid at the end of 3 yeras
= Principal + Interest
= Rs. 6050 + Rs. 1179.75
= Rs. 7229.75.

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ANSWER

Rs. 3,500 is given at 7% p.a. rate of interest . Find the interest which will be received at the end of two years.

Posted by Gurleen Kaur 6 years, 6 months ago

CBSE > Class 07 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

P = Rs. 3500
R = 7% T= 2 years
{tex}\therefore{/tex} Interest at the end of two years
= {tex}\frac{P R T}{100}{/tex} = {tex}\frac{3500 \times 7 \times 2}{100}{/tex}
= Rs. 490
Hence, the interest at the end of two years is Rs. 490.

1Thank You

ANSWER

Rs. 10,000 is invested at 5% interest rate p.a. Find the interest at the end of one year .

Posted by Gurleen Kaur 6 years, 6 months ago

CBSE > Class 07 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

Principal = Rs. 10,000 Rate = 5% Time = 1 year
Simple Interest {tex} = \frac{{P \times R \times T}}{{100}} = \frac{{10000 \times 5 \times 1}}{{100}}{/tex}
S.I. = Rs 500
Rs. 500 is the interest at the end of the year.

1Thank You

ANSWER

An item was sold for rs. 540 at a loss of 5%. What was its cost price?

Posted by Gurleen Kaur 6 years, 6 months ago

CBSE > Class 07 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

S.P. = C.P. – loss
{tex}\therefore{/tex} 540 = C.P. – 5% of C.P.
{tex}\therefore{/tex} 540 = C.P. – {tex}\frac{5}{100} \times{/tex} C.P.
{tex}\therefore{/tex} 540 = {tex}\left(1-\frac{5}{100}\right){/tex} C.P.
{tex}\therefore{/tex} 540 = {tex}\left(1-\frac{1}{20}\right){/tex} C.P.
{tex}\therefore{/tex} 540 = {tex}\frac{19}{20}{/tex} C.P.
{tex}\therefore{/tex} C.P. = {tex}\frac{540 \times 20}{19}{/tex}
{tex}\therefore{/tex} C.P. = 568{tex}\frac{8}{19}{/tex}
Hence, the cost price of the item is Rs.568{tex}\frac{8}{19}{/tex}

1Thank You

ANSWER

An article was sold for rs.250 with a profit of 5%. What was its cost price ?

Posted by Gurleen Kaur 6 years, 6 months ago

CBSE > Class 07 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

S.P. = C.P. + Profit
{tex}\therefore{/tex} 250 = C.P. + 5% + C.P.
{tex}\therefore{/tex} 250 = C.P. + {tex}\frac{5}{100} \times{/tex} C.P.
{tex}\therefore{/tex} 250 = C.P. + {tex}\frac{1}{20} \times{/tex} C.P.
{tex}\therefore{/tex} 250 = {tex}\left(1+\frac{1}{20}\right){/tex} C.P.
{tex}\therefore{/tex} 250 = {tex}\frac{21}{20}{/tex} C.P.
{tex}\therefore{/tex} C.P. = Rs. 238{tex}\frac{2}{21}{/tex}
{tex}\therefore{/tex} = Rs. 238.10
Hence, the cost price of the article is Rs. 238{tex}\frac{2}{21}{/tex}

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ANSWER

Cost of an item is rs. 50 .It was sold with a profit of 12%. Find the selling price.

Posted by Gurleen Kaur 6 years, 6 months ago

CBSE > Class 07 > Mathematics

1 answers

Sia ? 6 years, 6 months ago

Gain = 12% of C.P.
= 12% of Rs. 50
= Rs.{tex}\frac{12}{100} \times{/tex}50
= Rs. 6
Selling Price = C.P. + Gain
= Rs. 50 + Rs. 6
= Rs. 56
Hence, the selling price of the item is Rs. 56.

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ANSWER

The Temperature at 6 Pm of a town was 37° C at midnight .At Shopian Was Temperature was 37°

Posted by Suhaib Khubaib 6 years, 6 months ago

CBSE > Class 07 > Mathematics

1 answers

Suhaib Khubaib 6 years, 6 months ago

Paddar paddar Saddam Paddar

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ANSWER

A shopkeeper bought a chair for rs. 375 and sold it for rs. 400. Find the gain percentage.

Posted by Gurleen Kaur 6 years, 6 months ago

CBSE > Class 07 > Mathematics

1 answers

Yogita Ingle 6 years, 6 months ago

The cost price = Rs.375
The selling price =Rs. 400
The gain % = profit /cost price*100
=[(400-375)/375]*100
=(25/375)*100
=100/15
=6.6..........infinite%

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ANSWER

A shopkeeper gains Rs 1 on each pen and lose 40 praise on each pencil. He sells 45bpens and some pencils losing Rs 5 in all. How many pencils were sold?

Posted by Prema Das 6 years, 6 months ago

CBSE > Class 07 > Mathematics