Question

20 women can build a wall 40m long and 6m high in 12 days then how many women are required to build another wall which is 20 m long and 6m high in 6 days​

Answer 1

Answer:15 womens were required to build a wall 6m and 20m in 6 days

Step-by-step explanation:

Answer 2

Answer:

20 women

Step-by-step explanation:

If $x_1$ person can do a work $w_1$ in $n_1$ days while, $x_2$ person can do the same kind of work $w_2$ in $n_2$ days,

Then,

$\frac{x_1\times n_1}{w_1}=\frac{x_2\times n_2}{w_2}$

Here, $x_1=20$, $n_1=12$ and $w_1=40\times 6=240$ ( area of the building ),

$n_2=6$, $w_2=20\times 6=120$,

By substituting the values,

$\frac{20\times 12}{240}=\frac{6x_2}{120}$

$\frac{240}{240}=\frac{6x_2}{120}$

$1=\frac{x_2}{20}$

$\implies x_2=20$

Hence, 20 women are required to build another wall which is 20 m long and 6m high in 6 days​.