Question

assume a gasoline price of $4.27 per gallon. What is the gasoline cost for a 2100 mile trip if you drive at an average speed of 65 miles per hour?

Answer 1

Te car travell 23 miles per gallon.

Detemine the amount of gasoline used to travell 2100 mile.

`\begin{gathered} A=(2100)/(23) \\ \approx91.30 \end{gathered}`

The price of gasoline is $4.27 per gallon.

Determine the cost of 91.30 gallons of gasoline.

`\begin{gathered} C=91.30\cdot4.27 \\ =389.851 \\ \approx389.85 \end{gathered}`

So gasoline cost is $389.85.