If the ratio of boys to girls is 2:5 and there are 25 girls, how many boys are there?

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Multiple Choice

If the ratio of boys to girls is 2:5 and there are 25 girls, how many boys are there?

Explanation:
Ratios show a fixed relationship between two quantities. Here, for every 2 boys there are 5 girls. The girls count of 25 represents 5 equal parts (since 25 ÷ 5 = 5 per part). The boys are 2 parts, so 2 × 5 equals 10 boys. This keeps the same 2:5 ratio. So there are 10 boys. The other numbers wouldn’t maintain the 2:5 relationship with 25 girls.

Ratios show a fixed relationship between two quantities. Here, for every 2 boys there are 5 girls. The girls count of 25 represents 5 equal parts (since 25 ÷ 5 = 5 per part). The boys are 2 parts, so 2 × 5 equals 10 boys. This keeps the same 2:5 ratio. So there are 10 boys. The other numbers wouldn’t maintain the 2:5 relationship with 25 girls.

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