Question

40men can finish a piece of work in 26 days how many men will be needed to finish it in 12days​

Answer 1

${ \boxed{ \huge{ \mathtt{26 \: \: days \: \: - - - - \: \: 40 \: \: men}}}} \\ { \boxed{ \huge{ \mathtt{ \: \: \: \: 1 \: \: day \: \: - - - - (40 \times 26) \: men}}}}$

Hence,

${ \boxed{ \huge{ \mathtt{12 \: \: days \: \: - - - - \: \: (\frac{40 \times 26}{12}) \: men}}}} \\ \\ { \boxed{ \huge{ \mathtt{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{1040}{12} \: men }}}} \\ \\ { \boxed{ \huge{ \mathtt{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: =86 \: men}}}}$

Answer 2

Answer:

The work can be finished in 26 days by men

The work is finished in 1 days=40*26

The work is finished in 12 days=40*26/12=260/3