A logic problem by Soumyendu Chatterjee

Logic Level 3

Mr. Deb comes to Chinsurah station from his office by train regularly at a certain time. His private car reaches at the same time and picks him up to his residence. One day Mr. Deb reaches Chinsurah Station one hour early and started walking towards his residence. Somewhere in the middle of the road his driver, who maintained his perfect timing, picks him up and reaches home five minutes earlier than the usual time. How long (in seconds) Mr. Deb walked before boarding his car?


The answer is 3450.

Soumyendu Chatterjee by Soumyendu Chatterjee , 26, India

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2 solutions

Hasmik Garyaka
Nov 28, 2018

When Mr Deb meet the car it was 2.5 minutes before meeting time, he walked about 57.5 minutes.

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Saya Suka
Mar 23, 2021

The 5-minute saved that day was from the shortened car's return journey from the point where he met his driver in the car and Chinsurah station. That means, it was 5 ÷ 2 = 2.5 minutes earlier that the usual pickup time, so Mr Deb must have walked for 60 - 2.5 = 57.5 minutes = 57.5 × 60 = 3450 seconds.

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