Question

Sonal read 2 by 5 of a book she find that there are still 120 pages left to be read how many pages are there in the book

Answer 1

Assume there are 5 page ... She read 2 page ...3 page left
Given 120 page left ..
2×40=120
5×40=200
Total page 200

Answer 2

hye
=======================================
 
let total be x

=> Sonal read 2 by 5 of a book

=>2/5x

=>she find that there are still 120 pages left to be read

so  let us from an equation

=>2/5 of x = 120

=>2/5 *x = 120

=>x = 120 *5/2


=>x = 600  / 2

=>x = 300 pages

so there are 300 pages

====================

lets check

2/5 of 300 pages

=>2/5 *300

=>600/5

=>120 pages

===========================

hope it helps u.......