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: a is thrice as good as workman as b and therefore is able to finish a job in 60 days less than b . working together , they can do it in :
Options: a ) 20 days , b ) 22 1 / 2 days , c ) 24 days , d ) 25 days , e ) 30 days
Output:
b