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By walking at (3)/(4) of his usual speed...

By walking at `(3)/(4)` of his usual speed, a man reaches his office 20 minutes later than his usual time. The usual time taken by him to reach his office is

A

30 minute/ 30 मिनट

B

75 minute/ 75 मिनट

C

90 minute/ 90 मिनट

D

60 minute/ 60 मिनट

Text Solution

Verified by Experts

The correct Answer is:
D
सामान्य चाल से चलने पर लगा समय `=(3)/((4-3))xx20`
`=3xx20`
=60 minute
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