A is twice as efficient as B and they together can complete a piece of work in 24 days. Find the number of days, that A alone takes to compelete the work.

A is thrice as efficient as B.A and B cam complete a piece of work in 12 days. Find the number of days in which A alone complete it.

Rahul is twice efficient as Ram. If both of them can complete the work in 12 days. Then find the number of days Rahul would take to complete the work above.

A is twice as good as B and together they finish a piece of work in 16 days. The number of days taken by A alone to finish the work is

A can complete a piece of work in 12 days. B is 60% more efficient than A. The number of days, that B will take to complete the same work, is

B takes two times as long as (A + C) together to complete a work. C takes three times as much as (A + B) together to complete a work. If all the three, working together can complete the work in 36 days, then find the number of days A, B and C alone will take to complete this work.

A takes three times as long as (B + C) together to complete a work. B takes four times as much as (A + C) together to complete a work. If all the three, working together can complete the work in 22 days, then find the number of days A, B and C alone will take to complete this work