Answer:
35 minutes
Step-by-step explanation:
Martin can run a kilometer in 7 minutes. If he keeps at this pace how many minutes will it take him to run a 5k race?
To solve this, we simply need to use proportion.
Let x represent the number of minutes that will take Martin to run a 5 kilometer race
1 kilometer = 7 minutes
5 kilometer = x
cross-multiply
1 × x = 7 × 5
x = 35 minutes
Therefore, it will take Martin 35 minutes to run a 5 kilometer race.
