Question

A bag had 100 mangoes. 2/5 are rotten and 1/3 are green. How many mangoes are ripe?

Answer 1

Rewrite the fractions to have a common denominator

2/5 = 6/15

1/3 = 5/15

Add together: 6/15 + 5/15 = 11/15

Subtract from 1:

1-11/15 = 4/15

4/15 of them are ripe