A car travels a distance of 100 km in 2.00 hours. It then travels an additional distance of 60.0 km in 1.00 hour. The average speed of the car for the entire trip is
A) 80.0 km/hr.
B) 60.0 km/hr.
C) 53.3 km/hr.
D) 50.0 km/hr.
E) 46.7 km/hr.

Question

Quizplus · Accepted Answer

Average speed is defined as total distance traveled divided by time taken.

Total distance traveled = 100 km + 60 km = 160 km 
Total time taken = 2.00 hours + 1.00 hour = 3.00 hours

Therefore, average speed = total distance / total time = 160 km / 3.00 hours = 53.3 km/hr

A Car Travels a Distance of 100 Km in 2