Question

Reemu read 1/5th pages of a book .If she reads further 40 pages,she would have read 7/10th pages of a book.How many pages are left to read?

Answer 1

1/5 means 2/10,so if she reads 40 pages she would read 7/10, so 40 pages= 5/10. 5/10 + 2/10 =7/10
remaining is 3/10 pages. So you have to divide 40 which is 5/10 by 3

Answer 2

Thank you for asking this question. Here is your answer:

First we will assume the pages in the book be x

2/3 of x + 40 = 7/10 of x

2x/3 + 40 = 7x / 10

7x /10 - 2x/3 = 40

21x 20x / 30 = 40

x / 30 = 40

x = 1200

1200 × 7/10 = 840 pages are read

and 1200 - 840 = 360

So this means there are 360 pages left to be read.

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