Detailed Instructions: In this task, you need to answer the given multiple-choice question on the gain. Gain is the value by which to multiply the input. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Problem:Problem: if a man walks to his office at of his usual rate , he reaches office 1 / 3 of an hour late than usual . what is his usual time to reach office ?
Options: a ) 2 hour , b ) 5 hour , c ) 1 hour , d ) 3 hour , e ) 2 hour
Solution:
c