Question

A takes twice as much time as B and thrice as much as C to finish a piece of work. They  together  finish the work in one day. Find the time taken by A to finish the work.

(A)      6    (B)  2        (C)   3              (D) 5

A and B can do a job alone in 20 days and 30 days respectively. In how many days the job will be completed if they work together ?
(A) 12 days (B) 24 days (C) 15 days (D) 28 days​

Answer 1

Answer:

6 and 24................