Correct Answer - Option 2 : 4

**Given**:

12 men take to complete work = 8 days

**Calculation:**

Total work done by 12 men = 12 × 8 = 96 unit

According to question

work done by 12 men in 3 days = 3 × 12 = 36 unit

Remaining work = 96 - 36 = 60 unit

3 more men added = 12 + 3 = 15 men

Number of days to complete remaining work = 60/15 = 4 days ** **

** ∴ In 4 days will all of them together complete the remaining work.**