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I am having difficulty setting up the unit fractions, I believe there should be 3 total, but I am not getting a logical answer when I work through the problem.

I am having difficulty setting up the unit fractions I believe there should be 3 total but I am not getting a logical answer when I work through the problem class=

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mathmate
225 miles/hour
=225 miles/hour *5280 feet/mile * .3048 m/foot /3600 s/hour
=100.584 m/s

Length of each lap
=5.061 km * 1000m/km
=5061 m

Time it take to go around 1 lap
= 5061/100.584 m / (m/s)
=50.32 s.

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