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Time & Distance
Q. A car travels at a constant speed of 60 km/h for 2 hours, then at 80 km/h for 1 hour. What is the average speed of the car for the whole journey?
A) 66.67 km/h
The average speed of the car is given by the total distance divided by the total time. The total distance is 60 x 2 + 80 x 1 = 200 km, and the total time is 2 + 1 = 3 hours. Therefore, the average speed is 200/3 = 66.67 km/h.
B) ) 70 km/h
C) 73.33 km/h
D) 76.67 km/h
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