Answer
$9.6\;gal/h$.
Work Step by Step
The given values are
Time $t=3.4\;h$.
Amount of gas $q=32.65\;gal$.
For gallons per hour
$=\frac{q}{h}$
Substitute all the values.
$=\frac{32.65\;gal}{3.4\;h}$
Simplify.
$=9.60294117647 \;gal/h$
Rounded value.
$=9.6 \;gal/h$
Hence, the used gas was $9.6\;gal/h$.
