Running 3/4th of his usual rate, a man is 15min late. Find his usual time in hours ?
Answers:
A) 2/3 hrs
B) 3/4 hrs
C) 1/3 hrs
D) 1/4 hrs
E) 1 hr
Explanation:   Walking at 3/4th of usual rate implies that time taken would be 4/3th of the usual time. In other words, the time taken is 1/3rd more than his usual time   so 1/3rd of the usual time = 15min   or usual time = 3 x 15 = 45min = 45/60 hrs = 3/4 hrs.   ANSWER IS 3/4 hrs
<result>B</result>
Running 3/4th of his usual rate, a man is 15min late. Find his usual time in hours ?