# A is twice as efficient as B and together they can finish a work in 18 A alone

A is twice as efficient as B and together they can finish a work in 18 A alone can finish the work in

- 27 days
- 54 days
- 36 days
- 45 days

**Answer: (1) 27 days**

**Solution:-**

A is twice as efficient as B

Then, 2 A = B or A = B/2

They can finish a work in 18 days.

1/A + 1/2A = 1/18

3/2 A = 1/18

2 A = 54

A = 54/2

A = 27

A alone can finish the work = 27 days.

Hence, the correct answer is option (1) 27 days.