Definition: In this task, you need to answer the given multiple-choice question on the physics. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Input: Problem: at a time a , do 20 % less work than b . if a do any work in 15 / 2 hour , then in how many hour b will finish work ?
Options: a ) 5 hour , b ) 11 / 2 hour , c ) 6 hour , d ) 13 / 2 hour , e ) 8 hour
Output:
c