(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 total 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
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Answer:
a) 80 km/hr
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