Answer
Ans: = $\frac{20 Miles}{1Gallon}$
Work Step by Step
300 Miles on 15 Gallons.
First Write the ratio and divide the common units:
So, $\frac{300 Miles}{15 Gallons}$
Now find the lowest term
$\frac{300 Miles}{15 Gallons} $
= $\frac{300\div15 Miles}{15\div15 Gallons}$
= $\frac{20 Miles}{1Gallon}$