Question #8ab21

1 Answer
soq
Dec 8, 2017

2:1

Explanation:

For simplicity, suppose there are 3x girls and 2x boys, where x is an arbitrary number. After 25% boys leave the group, remainder is:

girls : 3x (no change)
boys: 2x - 25% of 2x = 2x *(1 - 0.25) = 1.5 x

New ratio of girls to boys is \frac{3x }{1.5 x} = 2:1

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