Question

7 men can do a piece of work in 12 days. How many men will be needed to do double the work in 8 days​

Answer 1

Given :-

• 7 men can do a piece of work in 12 days.

To find :-

• How many men will be needed to do double the work in 8 days

Solution :-

now let's find the number of mens

$: \implies \sf \frac{ m_{1} \times d_{1}}{ w_{1}} = \frac{ m_{2} \times d_{2}}{w_{2}}$

$: \implies \sf \frac{7 \times 12}{84} = \frac{(7 + x) \times 8}{84 \times 2}$

$: \implies \sf21 = 7 + x$

$: \implies \sf \: x = 14$

so therefore 14 men's needed.