Answer
1200lbs
Work Step by Step
The formula is very simple. $w_{1}*x_{1} = w_{2}*x_{2}$
We know:
$w_{1} = 240$
$x_{1} = 25$
$x_{2} = 5$
So lets plug those into our equation and solve:
$240*25 = 5 * w$
$6000 = 5w$
$\frac{6000}{5} = w$
$1200 = w$