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 lat...........

Quantitative Aptitude ( CCS) Time & distance

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

6 hrs

7 hrs

8 hrs

Cannot be determined

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Explanation:

Suppose the man covers first distance in x hrs.and second distance in y hrs. Then,
4x+5y=35 and 5x+4y = 37
Solving the equations,
we get x = 5 and y = 3
Total time taken = (5+3)hrs = 8 hrs

Hence, option 3 is the correct answer.