Question
Walking 6/7th of his usual speed, a man is 12 minutes too late. What is the usual time taken by him to cover that distance?
Answer: Option D
NEW SPEED = 6/7 OF USUAL SPEED
SPEED AND TIME ARE INVERSELY PROPORTIONAL.
HENCE NEW TIME = 7/6 OF USUAL TIME
HENCE, 7/6 OF USUAL TIME – USUAL TIME = 12 MINUTES
=> 1/6 OF USUAL TIME = 12 MINUTES
=> USUAL TIME = 12 X 6 = 72 MINUTES
= 1 HOUR 12 MINUTES
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NEW SPEED = 6/7 OF USUAL SPEED
SPEED AND TIME ARE INVERSELY PROPORTIONAL.
HENCE NEW TIME = 7/6 OF USUAL TIME
HENCE, 7/6 OF USUAL TIME – USUAL TIME = 12 MINUTES
=> 1/6 OF USUAL TIME = 12 MINUTES
=> USUAL TIME = 12 X 6 = 72 MINUTES
= 1 HOUR 12 MINUTES
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