30 girls and boys have planned for a picnic There is a ratio of 3 girls to 7 boys How many boys are there

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asked Feb 5, 2017 234k views

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Rodrigo Vieira · Answer 1 · 2017-02-08T21:16:26+0000

If the ratio is 3:7, that means in every group of 10, there are 3 girls and 7 boys. If there are 30 people total, then there are 3 groups of 10. Therefore 7*3=21. So there are 21 boys.

30 girls and boys have planned for a picnic There is a ratio of 3 girls to 7 boys How many boys are there

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