instruction:
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'.
question:
Problem: what is the least number of square tiles required to pave the floor of a room 11 m 50 cm long and 1 m 50 cm broad ? 
Options: a ) 724 , b ) 804 , c ) 69 , d ) 844 , e ) none
answer:
c


question:
Problem: if 12 men do a work in 80 days , in how many days will 16 men do it ? 
Options: a ) 22 , b ) 87 , c ) 77 , d ) 60 , e ) 85
answer:
d


question:
Problem: a man can do a piece of work in 6 days , but with the help of his son , he can do it in 3 days . in what time can the son do it alone ? 
Options: a ) 5 , b ) 7 , c ) 6 , d ) 8 , e ) 9
answer:

c