50 men can do a piece of work in 12 days. The number of men required to complete the same work in 50 days is:

Correct option is A

Given:

50 men can complete the work in 12 days.

The same work needs to be completed in 50 days.

Formula Used:

For equal work

​$$M_1 \times D_1 = M_2 \times D_2$$​​

Solution:

$$M_1 = 50$$​​ and $$D_1​ = 12$$​​

$$M_2 = ?​$$ and $$D_2 = 50$$​​

​$$50 \times 12 = M_2 \times 50$$​​

​$$M_2 = \frac{50 \times 12}{50} = 12$$​​

12 men are required to complete the work in 50 days.

thus , the correct answer is 12 .