Question

It takes Tim 4.5 hours to run 50 kilometers. Which expression will

allow him to change this rate to minutes per mile?

Answer 1

To change Tim's running rate from kilometers per hour to minutes per mile, we need to use unit conversion factors.

First, we need to convert the distance from kilometers to miles. One kilometer is equal to 0.621371 miles. Therefore, 50 kilometers is equal to:

50 km * 0.621371 mi/km = 31.06855 miles

Next, we need to convert the time from hours to minutes. One hour is equal to 60 minutes. Therefore, 4.5 hours is equal to:

4.5 hours * 60 min/hour = 270 minutes

Now, we can calculate Tim's running rate in minutes per mile by dividing the time by the distance:

270 min / 31.06855 miles = 8.69805 minutes per mile

So the expression that will allow Tim to change his running rate to minutes per mile is:

(4.5 hours * 60 min/hour) / (50 km * 0.621371 mi/km)

Explanation:

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