Answer
10 gal
Work Step by Step
Create a proportion using ratios of gallons:hours.
$\frac{25\ gal}{3\ hr}=\frac{x\ gal}{1.2\ hr}$
Set the product of the means equal to the product of the extremes and solve for the variable.
$3\times x=25\times 1.2$
$3x=30$
$3x\div3=30\div3$
$x=10$