Question
A man walks 4 km at a speed of 2 kmph, runs 6 km at a
speed of 2 kmph and goes by bus another 32 km. Speed of the bus is 8 kmph. Find the average speed of the man in kmph.Solution
Total distance = 4 + 6 + 32 = 42 km Time taken individually: => 4/2 = 2 hr => 6/2 = 3 hr => 32/8 = 4 hr Average speed of man = Total distance/ Total time => 42/9 = 4(2/3) kmph
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