Question

A pet store has 150 goldfish and betta fish all together the ratio of goldfish and betta fish is 2:3

what fraction of the fish are goldfish

Answer 1

2/5

Explanation:

2:3

If we write an equation: 2x+3x=150

5x=150, so x=30

Goldfish= 2x= 60

Betta fish= 3x= 90

60/150= 6/15 = 2/5

OR

2x+3x= 5x

2x/5x, cancel out x, 2/5