Question

Joe has read 30​% of a book. He has 56 more pages to finish. How many pages are there in the​ book?

Answer 1

There are 80 pages left.

Explanation:

100% - 30% = 70%

70% = 56 pages

Insert x into a equation.

0.7x = 56

Multiply by 10 on both sides to get rid of the decimal.

0.7x = 56

· 10 ·10

Divide by 7 on both sides to get x by itself.

7x = 560

7

x = 80

Answer 2

80 pages

Explanation:

If Joe has read 30% and 56 pages is 70% of the book. We divide 56 by 7 and get 8 meaning that 10% of the book is 8. Once we know this we multiply 8 x 10 and get the amount of pages in the book 80