A is twice as good workman as B.A takes 6 days the complete a work. In what time can B complete the work?

A is twice as good a workman as B. A takes 6 days to comlete a task. What time does B take to complete the work (in days)?

A is thrice as good a workman as B and takes 10 days less to do a piece of work than B takes. The number of days taken by B to finish the work is :

A can complete (2)/(3) of work in 6 days. In what time can he complete (4)/(9) of the work ?

A does half as much work as B in (3)/(4) th of the time.If together they take 18 day to complete the work.In how many days can B complete the work alone.

Time taken by A to complete a work is 7 days more than the time taken by B to complete the same work. Working together they can complete the work in 12 days. In what time can A alone complete the work ?