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?
2 answers:
Answer:
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
Answer:
At her current rate it will take here 70 minutes to finish the race
You might be interested in
Given : f(x) = 3x + 1
We get f(2) by substituting x = 2 in the given Function
⇒ f(2) = 3(2) + 1
⇒ f(2) = 6 + 1 = 7
Option C is the Answer
Answer:
ask an adult, about the situation
Step-by-step explanation:
Answer:
i would say true
Step-by-step explanation:
Answer:
square root of 7
Step-by-step explanation:
2 times 2 is 4
3 times 3 is 9
7 is the only option between 4 and 9
(this was more the easy method lol but hope this helps)
Isolate k by dividing both sides by 8
8k=4/9
k=4/72
Reduce if possible
4/72 -> 1/18
