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?
Choose the correct choice from the following choices
A) 2 hour  B) 5 hour  C) 1 hour  D) 3 hour  E) 2 hour
1 hour   1 hour   Speed Ratio = 1:3/4 = 4:3   Time Ratio = 3:4   1 -------- 1/3   3 --------- ? 1 hour
<result>C</result>
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?