Question

The ratio boys to girls in a group is 7:1. If there are 42 more boys than girls, work out how many girls there are.

Answer 1

Answer:

Total number of girls = 7

Step-by-step explanation:

let number of girls be x

so number of boys = x + 42

it's given that the ratio of boys to girls is 7:1

so (x+42)/x = 7/1

on cross multiplying we get

x + 42 = 7x

6x = 42

x = 7

therefore number of girls is 7

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