Correct Answer - Option 1 : 96 days

**Given:**

A can complete the work in 32 days

B is 2/3 as efficient as A

**Calculation:**

Let the efficiency of A and B be 3x and 2x respectively.

Work done by A in 32 days = 32 × 3x = 96x

Total work = 96x

Time taken by B to complete the twice work = ( 2 × 96x)/2x days

⇒ 96 days

**∴ B will complete twice the work in 96 days**