Correct Answer - Option 2 : 22

**Given:**

A is 50% more efficient than B.

B can complete a work in 33 days.

**Formula used:**

Total Work = Efficiency × Days

**Calculation:**

50% more = + ½

That is, if efficiency of B = 2 then efficiency of A = 2 + 1 = 3

⇒ E_{A }= 3, E_{B }= 2

∴ Total Work by B = Efficiency × Days = 2 × 33 = 66

∴ Time taken by A to complete the same work = 66 / E_{A} = 66/3 = 22 days.