Question

An auto mechanic recommends that 3 ounces of isopropyl alcohol be mixed with a tankful of gas (14 gallons ) to increase the octane of the gasoline for better engine performance. At this rate, how many gallons of gas can be treated with a 16-ounce bottle of alcohol

Answer 1

`\begin{gathered} \frac{alcohol}{\text{gas}}=\frac{alcohol}{\text{gas}} \\ (3)/(14)=(16)/(g) \\ 3g=224 \\ g=74.67\text{ gallons of gas} \end{gathered}`