If a man walks to his office at ¾ of his usual rate, he reaches office 1/3 of an hour late than usual. What is his usual time to reach office?
A.1 hour
B.2 hour
C.3 hour
D.4 hour
Answer and Feedback
Answer:A
Feedback:Speed Ratio = 1:3/4 = 4:3
Time Ratio = 3:4
1 -------- 1/3
3 --------- ? 1 hour
Time Ratio = 3:4
1 -------- 1/3
3 --------- ? 1 hour