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4-71.

To ride to school, Elaine takes 15 minutes to ride 8 blocks. Assuming she rides at a constant speed, how long should it take her to go 20 blocks? Justify your answer. Homework Help ✎

Find the time it takes Elaine to go 1 block, then try finding the time for 20 blocks.

37.5 minutes to go 20 blocks.