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NeX [460]
3 years ago
11

At summer camp the ratio of boys to girls was 7:2 If there were 21 boys how many girls were there?

Mathematics
1 answer:
Alenkinab [10]3 years ago
3 0
Ratio:\\7:2\\\\
7x-number\ of\ boys\\2x-number\ of\ boys\\\\
7x=21\ \ \ |:7\\
x=3\\\\
2x=2*3=6\\
Number\ of\ girls\ is\ equal\ to\ 6.
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