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'.

[EX Q]: Problem: if 36 men can do a piece of work in 25 hours , in how many hours will 12 men do it ? 
Options: a ) 22 , b ) 38 , c ) 60 , d ) 88 , e ) 75
[EX A]: e

[EX Q]: Problem: the radius of a semi circle is 70 cm then its perimeter is ? 
Options: a ) 32.8 , b ) 32.4 , c ) 360 , d ) 32.2 , e ) 32.9
[EX A]: c

[EX Q]: Problem: 12 men can complete a piece of work in 25 days . in how many days can 20 men complete that piece of work ? 
Options: a ) 55 days , b ) 77 days , c ) 20 days , d ) 88 days , e ) 15 days
[EX A]:
e