alleryWalking at three fourths of his usual speed, a man reaches the office 20 minutes late. What is his usual time?
A45 minutes
B80 minutes
C60 minutes
D40 minutes
Answer & Solution
Correct answer: C. 60 minutes
Time grows to 4/3 of usual, so one third of usual time is 20 min and usual time is 60 min.
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