Question

A book shop has 5/8 books on Hindi and 2/5 on maths.if there are 12480 books in all.Find the number of each kind?

Answer 1

Hi ,

First change the fractions into like fractions,

5 / 8 = ( 5 × 5 ) / ( 8 × 5 ) = 25 / 40

2 / 5 = ( 2 × 8 ) / ( 5 × 8 ) = 16 / 40

Sum of the fractions = 25 / 40 + 16 / 40 = 41 / 40

Out of 40parts we have to distribute 41 parts

It is not possible ,

So , the given fractions given in the problem

According to the problem ,

Total number of books = 12480

i ) Number of Hindi books = 5 / 8 of 12480

= ( 25 / 40 ) × 12480

= 7800

ii ) Number of Math books = 2 / 5 of 12480

= 16 / 40 × 12480

= 4992

But it is not possible .

Because , sum of these two values not equals to 12480.

I hope this helps you.

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