Ratio problem: red to blue is 3:5; if red = 24, blue equals what?

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Multiple Choice

Ratio problem: red to blue is 3:5; if red = 24, blue equals what?

Explanation:
This problem tests how to scale a ratio to a known quantity. For red to blue the ratio is 3:5, meaning red is 3 parts and blue is 5 parts of the same whole. If red equals 24, each part is worth 24 ÷ 3 = 8. Blue is 5 parts, so 5 × 8 = 40. Therefore, blue equals 40.

This problem tests how to scale a ratio to a known quantity. For red to blue the ratio is 3:5, meaning red is 3 parts and blue is 5 parts of the same whole. If red equals 24, each part is worth 24 ÷ 3 = 8. Blue is 5 parts, so 5 × 8 = 40. Therefore, blue equals 40.

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