Question

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

Answer 1

Ava read 36 pages

Explanation:

Add 1/4 and 1/5 to get 9/20, So she read 9 out of every 20 pages which implies (x4) that she read 36 of the 80 pages.

Answer 2

`36 " pages"`

Explanation:

We can work out each fraction separately and add the number of pages. We can also add the fractions and work out the number of pages as a single amount.

`1/4 xx80 + 1/5 xx80`

=`20 + 16`

=`36 " pages"`

OR `1/4 +1/5= (5+4)/20`

`9/cancel20 xx cancel80^4`

=`36 " pages"`