# How Long will 28 men, Working 12 Hours a Day, Take to Complete the Work?

16 men are able to complete a piece of work in 12 days working 14 hours a day. How long will 28 men, working 12 hours a day, take to complete the work?

- 7 days
- 10 days
- 8 days
- 6 days

**Answer: (3) 8 days**

**Explanation:-
**

**Formula-**

M

Where, M = number of men, D = number of days and H = number hours.

M

_{1}D_{1}H_{1}= M_{2}D_{2}H_{2}Where, M = number of men, D = number of days and H = number hours.

**Given,**

M_{1} = 16, D_{1} = 12, H_{1} = 14, M_{2} = 28, H_{2} = 12 and D_{2} = ?

Then, 16 x 12 x 14 = 28 x 12 x D_{2}

D_{2} = 16 x 12 x 14 /28 x 12

= 16/2

= 8 days

Then, 28 men working 12 hours a day, take to complete the work in 8 days.

Hence, the answer is (c) 8 days.