iitssmaii iitssmaii

13-11-2020
Mathematics

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The ratio of the number of boys to the number of girls in a class is 5 to 7. How many boys are there if there are 21 girls?

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jonesjrroberte jonesjrroberte

13-11-2020

5/7 = b/21
105/7 = b
15 = b

15 boys

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