Question

Hello! I really need help it will mean a lot if anyone considers.

Answer 1

Given

8 gallons of gasoline is required to travel 340 miles.

After mechanic repair the car, 7 gallons of gasoline is required to travel 350 miles.

The price of gallon is 4 dollar per gallon.

Explanation

To determine the cost nearest cent per mile to run the car after the mechanic worked,

$\begin{gathered} (\frac{8}{340}-\frac{7}{350})\times4=(\frac{8}{340}-\frac{1}{50})\times4 \\ (\frac{32}{340}-\frac{4}{50})=\frac{1600-1360}{340\times50} \\ \frac{1,600-1,360}{340\times50}=\frac{240}{340\times50}=\frac{24}{1700} \\ \end{gathered}$

Simplify it again,

$\frac{24}{1700}=\frac{6}{425}=0.0141$

Answer

Hence the cost is 0.0141 cent per mile.