Question

If $15$ workers can build a wall in $48$ hours, how many workers will be required to do the same work in $30$ hours?

Answer 1

Given that

$15$ workers can build a wall in $48$ hours.

Let

$x$ workers can complete the same work in $30$ hours.

Then, $15\times 48=30\times x$

$\Rightarrow \frac{15\times 48}{30}=x$

$\Rightarrow x=24$

Hence, $24$ workers will be required to do the same work in $30$ hours.