Need help with a math question

Question

Ava read 1/4 of a book on Monday, and 1/5 on Tuesday. There are 80 pages in the book. How many pages did she read altogether on both days?

Answer 1

First you need to add 1/4 and 1/5. In order to add fractions, you need a common denominator. 4 and 5 will both go into 20 evenly, so we'll use that as our denominator.

1/4 = 5/20

1/5 = 4/20

5/20 + 4/20 = 9/20

Now we multiply 80/1 x 9/20. 80 x 9 = 720 1 x 20 = 20. 720/20.

720 divided by 20 = 36. She read 36 pages.

Answer 2

1/5 + 1/4 = 9/20

9/20 * 80 = 36

She read 1/5*80 = 20 pages on Monday

She read 1/5*80 = 16 pages on Tuesday

for a total of 36 pages.