Question

mike drove 20 miles in a 1/2 hour. What is his unit rate in miles per hour? A 20 miles B 30 C 40 D 50

Answer 1

The answer would be C. 40 mph

Answer 2

40 miles an hour

Explanation:

Note that the speed given to you is in 1/2 an hour. To get 1/2 hour to become 1 hour, multiply by 2.

20 = 1/2h

20(2) = (1/2)h(2)

Simplify. Isolate the h. What you do to one side, you do to the other

20(2) = h

h = 40

40 mph is your answer

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