A runner is running a 10 km race. It takes her 17.5 minutes to reach the 2.5 km mark. At that rate, how long will it take her to run the whole race?

At her current rate it will take here 70 minutes to finish the race

time = 70 minutes

Step-by-step explanation:

According to the question the whole race is 10 kilometer. It takes her 17. 5 minutes to cover a distance of 2.5 km.

The rate the runner used to cover the distance of 2.5 km can be computed as follows:

rate = distance / time

distance = 2.5 km

time = 17.5 minutes

rate = 2.5/17.5

rate = 0.14285714285 kilometer/minutes

rate = 0.14285714285 km/min

Use the rate to calculate for the time the runner used for the whole distance of 10 km

rate = distance/time

rate = 0.14285714285 km/min

distance = 10 km

rate = distance/time

cross multiply

time = distance/rate

time = 10/0.14285714285

time = 70 minutes

time = 70 minutes