Question

Daniel has read 70% of a book. He has 21 more pages to finish. How many pages were there in the book?

Answer 1

70 pages

Explanation:

Since Daniel has read 70% of the book he has 100% - 70% or 30% of the book left to read. This 30% is 21 pages. We can write this equation, where x is the number of pages in the book:

0.3x = 21

(0.3 is equivalent to 30%)

We divide by 0.3 on both sides of the equation to get:

x = 70 pages