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The ratio of boys to girls in a swimming lesson is 3 : 7. If there are 20 children in total, how many boys are there?

Sagot :

Answer:

There are 6 boys.

Step-by-step explanation:

Given the ratio 3:7. we know that there are 3 boys and 7 girls adding up to a total of 10 parts. If there are 20 children, we simply need to double our ratio to find our answer. The doubled ratio is 6:14, which adds up to 20 children in total and gives us the answer that there are 6 boys.

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