A car covers one-fourth of a distance at a speed of 100 km/hr, half of the remaining distance at a speed of 60 km/hr and the remaining distance at a speed of 100 km/hr. If the time taken to complete the journey is 10 hours, then what is the average speed of the car?

A car covers one-fourth of a distance at a speed of 100 km/hr, half of

1.	A car covers one-fourth of a distance at a speed of 100 km/hr, half of the remaining distance at a speed of 60 km/hr and the remaining distance at a speed of 100 km/hr. If the time taken to complete the journey is 10 hours, then what is the average speed of the car?
A.	80 km/hr
B.	72 km/hr
C.	75 km/hr
D.	64 km/hr
Answer» B. 72 km/hr

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A car covers one-fourth of a distance at a speed of 100 km/hr, half of the remaining distance at a speed of 60 km/hr and the remaining distance at a speed of 100 km/hr. If the time taken to complete the journey is 10 hours, then what is the average speed of the car?

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