Question

By walking at 4/5 of his usual speed, a man is 6 minutes late to his office. Find the usual time to cover the distance.

Answer 1

the time is 30min. as he is 6min late.

Answer 2

The usual time to cover the distance is 24 minutes

Solution:

Given that,

By walking at 4/5 of his usual speed, a man is 6 minutes late to his office

Therefore,

With a speed of 4/5 th of the usual speed, the time taken is 5/4 th of the usual time

Let "x" be the usual time

(5/4 of usual time) - (usual time) = 6 minutes

$\frac{5}{4} \times x - x = 6\\\\\frac{x}{4} = 6\\\\x = 24$

Thus the usual time to cover the distance is 24 minutes

Learn more:

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