Question

Lin runs 5 laps around a track in 10 minutes

a. How many minutes per lap is that?
b. How many laps per minute is that?
c. If Lin runs 21 laps at the same rate, how long does it take her?

Answer 1

a)

Thus, there are 22 minutes per lap

b)

Thus, there are 0.5 laps per minute

c)

If Lin runs 21 laps at the same rate, it would take 42 minutes to do so.

Explanation:

Lin runs 5 laps around a track in 10 minutes.

i.e. 5 laps in 10 minutes.

so

5/10 = 1/2 laps per minute

• unit rate = 0.5 laps / per minute

a)

Thus, there are 22 minutes per lap

b)

Thus, there are 0.5 laps per minute

c)

Unit rate = 0.5 laps per minute

If Lin runs 21 laps at the same rate, it would take 42 minutes to do so.