Mei is competing in a remote-control car race. She can complete 15 laps in 24 minutes. Find how long it will take mei to finish 20 laps if she keeps the same speed

It will take Mei 32 minutes to finish 20 laps

Step-by-step explanation:

* Lets explain how to solve the problem

- Mei is competing in a remote-control car race

- She can complete 15 laps in 24 minutes

- We need to find how long she will take to finish 20 laps if she keeps

the same speed

∵ Mei can complete 15 laps in 24 minutes

- Lets find her unit rate

∵ Her unit rate = number of laps : the time of this laps

∴ Her unit rate = 15 : 24 = 0.625 lap per minute

- Now we can use her unit rate to find the time of any numbers of laps

∵ She keeps her rate

∵ She will finish 20 laps

∵ Time = number of laps : her rate

∴ Time = 20 : 0.625

∴ Time = 32 minutes

* It will take Mei 32 minutes to finish 20 laps