Question

A race-car driver completes 30 laps in 15 minutes at a constant speed.

What is the driver's speed?
A. 0.5 laps per minute
B. 2 laps per minute
C. 15 laps per minute
D. 30 laps per minute
O E. 450 laps per minute

Answer 1

B. 2 laps per minute

Explanation:

If she got 2 laps per minute, it'd mean she'd have thirty laps at 15 minutes.

2 x 15 = 30

Laps x Minutes = Laps

Answer 2

B. 2 laps per minute

Explanation:

Speed = distance/time

• Distance = 30 laps
• Time = 15 minutes

Speed is:

• 30 laps / 15 min = 2 laps / min

Correct answer option:

• B. 2 laps per minute