Question

A man travels 35 km partly at 4 km/hr and at 5 km/hr. If he covers former
distance at 5 km/hr and later distance at 4 km/hr, he could cover 2 km more in
the same time. The time taken to cover the whole distance at original rate is​

Answer 1

Answer:

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Step-by-step explanation:

Here , the man travels say x km first , at the rate of 4 km per hour and the rest ( 35 - x ) km at the rate of 5 km per hour . The time he takes to travel at the rate of 4 km per hour is x / 4 hours ( as time = speed / distance )

The time taken by him to travel rest ( 35 - x ) km is ( 35 - x ) / 5 hours . Thus the total time taken by the man to travel whole 35 km = x / 4 + ( 35 - x ) / 5 hours