Question

A and B can do a job together in 12 days. If A is 2 times efficient as B, then how many days shall B alone take to complete the work.​

Answer 1

If A alone completes the work in x days, B will complete the same in 2x days.

∴

1+ 1= 1

x 2x 12

= 2 + 1= 1

2x 12

⇒ 2x = 36

∴ B alone will complete the work in 36 days (i.e. 2x ).

Answer 2

Answer:

QUESTION

A and B can do a job together in 12 days. If A is 2 times efficient as B, then how many days shall B alone take to complete the work.

ANSWER

B Alone will complete The work in 36 days