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16-10-2021
Mathematics

contestada

Which rate is better?
Sam runs 10 miles in 1 1/9 hours. Rina runs 8 miles in 7/8 hours.

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Аноним Аноним

16-10-2021

speed = distance / time

speed of sam = 10/ (10/9) = 9 miles per hour.

speed of rina = 8 / (7/8) = 8x8/7 = 9.14 miles per hour.

Since, speed of rina is more than that of sam, rina is better.

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