Speed Time & Distance Question Answers

Speed - Quant/Math - CAT 2008

Question 4 the day: June 18, 2003

The question for the day is from the topic of Speed.

By walking at 3/4^th of his usual speed, a man reaches office 20 minutes later than usual. What is his usual time?

(1)	30 min			(2)	60 min
(3)	70 min			(4)	50 min

Correct Answer - (2)

---

Solution:


3/4 of a man's usual speed means, he takes 4/3 of his usual time to cover the same distance, i.e. he takes 4/3 � 1 = 1/3 time extra.

1/3 time is 20 minutes (given)

Usual time = 20 * 3 = 60 minutes.