Question (35/50)
A is thrice as good workman as B and therefore is able to finish a certain job in 60 days less than B. How many days do they need to finish job if they work together ?(A)  20 Days
(B)  22.5 Days
(C)  25 Days
(D)  25.4 Days
Question (36/50)
A works twice as fast as B. If B can complete a certain work in 12 days independently, the number of days in which A and B together finish the work is ?(A)  4 Days
(B)  6 Days
(C)  8 Days
(D)  10 Days