3 years ago

The ratio of boys to girls in a group is 7:1. If there are 66 more boys than girls, work out how many girls there are.

Mathematics

1 answer:

Paha777 [63]3 years ago

7 0

Boys-77
Girls-11

b=7g
b=g+66

g+66=7g
(Subtract a g from both sides)
66=6g
girls=11

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