Question
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
Answer: Option C
Answer: (c)$4/3$ of usual time= Usual time + 20 minutes$1/3$ of usual time = 20 minutesUsual time = 20 × 3 = 60 minutesUsing Rule 8,Here, A = 3, B= 4, t = 20 minutesUsual time taken= $\text"A"/\text"Diff of A and B"$ × time= $3/{(4 - 3)} × 20$ = 60 minutes
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Answer: (c)$4/3$ of usual time= Usual time + 20 minutes$1/3$ of usual time = 20 minutesUsual time = 20 × 3 = 60 minutesUsing Rule 8,Here, A = 3, B= 4, t = 20 minutesUsual time taken= $\text"A"/\text"Diff of A and B"$ × time= $3/{(4 - 3)} × 20$ = 60 minutes
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