Answer:
D. 40
Step-by-step explanation:
First, calculate the total time she took in seconds.
Convert minutes to seconds using 60 seconds = 1 minute
2 min X 60 s = 120 s
Total time = 120 s + 42 s = 162 s
Calculate the total number of laps.
Convert metres to laps using 50 metres = 1 lap
Laps = 200 m ÷ 50 m = 4 laps
Divide the total time by the number of laps to calculate the unit rate, which is time per one lap.
Since it says to <u>estimate, round 162 seconds</u>.
162 s ≈ 160 s
160 s ÷ 4 laps ≈ 40s/lap
Her estimated time per lap is 40s.
