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Speed - Quant/Math - CAT 2009
Question 4 the day:
June 18, 2003
The question for the day is from the topic of Speed.
- By walking at 3/4th of his usual speed, a man reaches office 20 minutes later than usual. What is his usual time?
| (1) |
30 min |
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(2) |
60 min |
| (3) |
70 min |
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(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.
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