Question

What is the formula to get answer to this question: Dayo read 4/5th pages of a story which has 500 pages. How many pages is not yet read by Dayo

Answer 1

A book has 500 pages and 4/5 th of pages were read.

500 *
`(4)/(5)` = 400

And what are the remaining pages of the book?

500 - 400 = 100

So, there are 100 pages left to read.

Answer 2

its not really a formula but
Dayo has 1/5th of the pages left to read
1/5th of 500 is 100 (500/5)
Dayo has not read 100 pages