Question

On a recent business trip, a salesman traveled 52 miles the first hour, 64 miles the second hour and 49 miles the third hour.

How many miles did he average per hour?

Answer 1

52+64+49/3=55 mph average for 3 hours
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Answer 2

Answer: He traveled 54.28 miles per hour as an average.

Explanation:

Since we have given that

Number of miles traveled in first hour = 52 miles

Number of miles traveled in second hour = 64 miles

Number of miles traveled in third hour = 49 miles

Average per hour is given by

`=(3)/((1)/(x)+(1)/(y)+(1)/(z))\\\\\\=(3)/((1)/(52)+(1)/(64)+(1)/(49))\\\\\\=(3)/((784+637+832)/(40768))\\\\\\=(3)/((2253)/(40768))\\\\\\=(40768* 3)/(2253)\\\\\\=(122304)/(2253)\\\\\=54.28\ miles/hr`

Hence, he traveled 54.28 miles per hour as an average.