Question

A is twice as efficient as B and together they can finish a work in 18 days. A alone can finish the work in
1. 27 days
2. 54 days
3. 36 days
4. 45 days

Answer 1

Correct Answer - Option 1 : 27 days

Given:

A is twice as efficient as B and together they can finish a work in 18 days.

Formula used:

Men × Day = Total work

Calculation:

According to the question,

A = 2B

⇒ A/B = 2/1

⇒ Total work = (2 + 1)× 18

⇒ 54 

A alone can finish the work 

⇒ 54/2

⇒ 27

∴ A alone can finish the work in 27 days.