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+1 vote
35.1k views
in Aptitude by (138k points)

The driver of a car driving @ 36 kmph locates a bus 40 meters ahead of him. After 20 seconds the bus is 60 meters behind. The speed of the bus is : 

(a) 36 kmph (b) 20 m/sec. (c) 72 m/sec. (d) 18 kmph (e) None of these

1 Answer

+1 vote
by (144k points)
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Best answer

(d) Net distance gained by car over the bus
= 40 + 60 = 100m, in 20 sec.

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