Question

It took Jimena 89 minutes to run a 15-kilometer race last weekend. If you know that 1 kilometer equals 0.621 mile, how many minutes did it take Jimena to run 1 mile during the race? Round your answer to the nearest hundredth.

a. 3.68 minutes
b. 9.55 minutes
c. 9.88 minutes
d. 24.15 minutes

Answer 1

15km*0.621m=9.315m
89/9.315=9.55 minutes per mile

B. 9.55 minutes

Answer 2

First we need, to convert 15 km into units of miles.

15 km ( 0.621 mile / 1 km ) = 9.315 mile

So, for 9.315 miles, it would take 89 minutes for Jimena to run. Time and distance seems to be directly related, we can set up an equation:

d = kt

where d is distance and t is time.

9.315 mile = k (89 minutes)
k = 0.105 mile / minute

1 mile = 0.105 mile / minute ( t )
t = 9.55 minutes

Therefore, the correct answer from the choices listed above is option B.