Question

1. Suppose you are taking a school bus that gets7 miles per gallon. If you will be driving 154 miles,how many gallons of gas will you need ?

Answer 1

22 gallons

1) In this question, we need to assume that the number of gallons of gas per mile is constant.

2) Thus, we can write out the following proportion:

$\begin{gathered} 1-----7miles \\ g------154 \\ \frac{1}{g}=\frac{7}{154} \\ 7g=154 \\ \frac{7g}{7}=\frac{154}{7} \\ g=22 \end{gathered}$

So, we can state that I will need 22 gallons of gas to make 154 miles.