CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

Let assume 3-√5 is rational number. Therefore 3-√5=p/q after concelling the common factor from p and q . We get 3-√5=a/b where a and b are co prime no therefore 3-√5=a/b. √5=3-a/b. √5=3b-a/b because 3b-a/b is a rational number therefore √5 is also a rational number but we have proved that√5 is an irrational number therefore our assumtion contradiction is wrong therefore 3-√5 is irrational number.

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ANSWER

A does a piece of work in 24 days. B works 60% more efficiently then A. What is the number of days required by B to do twice as work as A?....

How the answer got plzz explain plzzzz plzzz

Posted by Broken Soul 6 years, 1 month ago

CBSE > Class 10 > Mathematics

43 answers

Sowndaryaa Lakshmi V 6 years, 1 month ago

Hii buddy

0Thank You

Broken Soul 6 years, 1 month ago

Mene to unhe ek baar keh diya tha why u give copied ans direct??

0Thank You

Broken Soul 6 years, 1 month ago

Sachme?

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Khushboo Singh 6 years, 1 month ago

Ohh???

0Thank You

♛ ❝Ѕυнαɴα❞ ♛ 6 years, 1 month ago

Yogita teacher hh.. student nahi... Vo app walo ki tarf se answer deti hh... Students k questions k answer krti h..?

2Thank You

Broken Soul 6 years, 1 month ago

Hora*

1Thank You

Broken Soul 6 years, 1 month ago

Nhi wo copied ans deti hai??

1Thank You

Khushboo Singh 6 years, 1 month ago

Hira?????

1Thank You

Broken Soul 6 years, 1 month ago

Kya hira hai???

1Thank You

Aadya Singh 6 years, 1 month ago

Yogita Ingle ma'am I think teacher h ???

1Thank You

Khushboo Singh 6 years, 1 month ago

Hi sis...

0Thank You

Broken Soul 6 years, 1 month ago

Whats up all?

1Thank You

Khushboo Singh 6 years, 1 month ago

Shi kaha???...im also...shruti...bs apne frnd ko miss kr rhe h

1Thank You

Broken Soul 6 years, 1 month ago

Hru

1Thank You

Broken Soul 6 years, 1 month ago

Hi suhu

1Thank You

Aadya Singh 6 years, 1 month ago

Chapter ka name to meko nhi yaad h...but I think time karke kuch tha kya..?? ?????

2Thank You

Broken Soul 6 years, 1 month ago

Wo yogita inge naam se hai n koi waha bhi ans diye hue hai... 11 mai , 8 mai , 9 mai .... ptani kaun hai aur kya hai!

2Thank You

♛ ❝Ѕυнαɴα❞ ♛ 6 years, 1 month ago

1Thank You

Aadya Singh 6 years, 1 month ago

I'm good khusbhoo...and u..??

2Thank You

Aadya Singh 6 years, 1 month ago

Meko kaise pta aapne kya dekha..??? ????

2Thank You

Broken Soul 6 years, 1 month ago

Lekin kaun sa chapter hai inverse propertions?

1Thank You

Aadya Singh 6 years, 1 month ago

Phir se nhi ho rhe...bye ???

1Thank You

Broken Soul 6 years, 1 month ago

I am fine now?

1Thank You

Broken Soul 6 years, 1 month ago

Screen clean kro aadu?

1Thank You

Aadya Singh 6 years, 1 month ago

Aap baith jao...meko to aa rha h...nhi baithana padega ????

1Thank You

Broken Soul 6 years, 1 month ago

8 class mai hoke aaya mai aur 11 mai aur pta hai iss app mai kya dekha mene?

1Thank You

Khushboo Singh 6 years, 1 month ago

Hru all

2Thank You

Aadya Singh 6 years, 1 month ago

Mere me answers kyu ni show ho rhe...??? ????

3Thank You

Broken Soul 6 years, 1 month ago

Hi....

2Thank You

Khushboo Singh 6 years, 1 month ago

Hii frnds

1Thank You

Broken Soul 6 years, 1 month ago

Lagta hai 8 class mai bethna chahiye?

1Thank You

Broken Soul 6 years, 1 month ago

Aese ques aay to mai fail..

1Thank You

Aadya Singh 6 years, 1 month ago

Ye question vaise I think 8th std. ka h..bcoz meko yaad h achhe se..aisa question lagaya h maine 8th me ?????

3Thank You

Khushboo Singh 6 years, 1 month ago

Yes ans is 15 days..mahima is ryt

1Thank You

Broken Soul 6 years, 1 month ago

Hope such ques dont come in boards...

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Broken Soul 6 years, 1 month ago

I got

0Thank You

Mahima Agrawal 6 years, 1 month ago

But B do twice the work of A , hence 15× 2 = 30

1Thank You

Broken Soul 6 years, 1 month ago

Thanx

0Thank You

Mahima Agrawal 6 years, 1 month ago

Now when u will solve u will get 1/ 15 , therefore B tajes 15 days

1Thank You

Broken Soul 6 years, 1 month ago

Smart?

2Thank You

Broken Soul 6 years, 1 month ago

Ohh thans aadu

1Thank You

Mahima Agrawal 6 years, 1 month ago

Work done by A in 1 day = 1/24 B works 60 percent more effieciently than A, therefore 1/24 × 160 /100

0Thank You

Aadya Singh 6 years, 1 month ago

Work done by A in 1 days = 1/24
Work done by B in 1 days = 1/24 × 60/100 + 1/24 = 1/15 .
So, B done the same amount of work in 15 days..
Number of days required by B to do same amount of work = 2×15 = 30 days.

2Thank You

ANSWER

Read the equation of 28 + 58 + 38 + 98 + 48 + 98 + 25 2 x 2 8 2 9 2 x 2 x 2 x

Posted by Jayant Verma 6 years, 1 month ago

CBSE > Class 10 > Mathematics