Your company is testing a new auto engine in a race car.The race car is on a 2-mile track.If the first lap was exactly at 2 minutes, so that the average speed for the first lap was 1.00 mile per minute, what would be the time required for the second lap so that the overall average speed will be 4 miles per minute?
A)It's not possible to end up with an overall average speed of 4 miles per minute.
B)1.0 minute
C)0.8 minutes
D)0.6 minutes
E)0.4 minutes

Question

Quizplus · Accepted Answer

To achieve an overall average speed of 4 miles per minute over 2 laps (4 miles), the total time needed would be 1 minute (4 miles / 4 miles per minute = 1 minute). Since the first lap already took 2 minutes, it's impossible to achieve this overall average speed, making any time for the second lap irrelevant to reaching the desired average.

Your Company Is Testing a New Auto Engine in a Race