Drew runs with a speed of 3.88 miles/hour.
How to calculate speed?
Speed is the ratio of distance to the time taken to travel that distance.
Speed = Distance/time
How to calculate the division of fractions?
Consider two fractional numbers as a/b and c/d.
Then the division of these fractions is calculated by
a/b ÷ c/d
⇒ a/b × 1/(c/d)
⇒ a/b × d/c
Calculation:
It is given that,
Distance = 3 2/5 = 17/5 miles
Time = 7/8 hours
So, the speed Drew runs is
Speed = Distance/time
= (17/5)/(7/8)
= 17/5 × 8/7
= 136/35 miles/hour
Converting the fraction into decimals, we get Speed = 3.88 miles/hour
Therefore, the speed that Drew runs is 3.88 miles/hour.
Learn more about the speed formula here:
https://brainly.com/question/13943409
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