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Laurie and Anna are running a 3 mile race. After 5 minutes, Laurie has run 3/5 miles and Anna has run 7/10 mile. If both ladies can keep their same pace for the remainder of the race, how many minutes ahead of Laurie will Anna cross the finish line?

1 answer

L runs 3/5 mile/5 min = 3/25 mile/min

3 mile /3/25 mi/min = 25 min

A runs7/10 / 5 = 7/50 mile/min

3 mile/ 7/50 = 150/7 = 21.4 min

25 - 21.4 = 3.6 min
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