A and B can do a job together in 7 days. A is `1 3/4` times as efficient as B. the same job can be done by A alone in: a. `9 1/3` days b. `11` days c. `12 1/4` days d. `16 1/3` days

A and B can do a job together in 7 days.A is 1(3)/(4) xx as efficient as B .the same job can be done by A alone in: a.9(1)/(3) days b.11 days c.12(1)/(4) days d.16(1)/(3) days

A and B can do a job together in 12days . A is 2 times as efficient as B . In how many days can B alones complete the work ?

A can do a certain job in 12 days. B is 60% more efficient than A. To do the same job B alone would take?

A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With the help of C, they did the job in 4 days only. Then, C alone can do the job in 9 1/5d a y s b. 9 2/5d a y s c. 10 d a y s d. 9 3/5d a y s

If 12 men can do a job in 7 days, what fraction of the job can be done by one man in one day?

A can do a certain job in 12 days.B is 60% more efficient than A.how many days does B alone take to do the same job?