One car travels about 28.5 miles on each gallon of gas. Suppose the average price of gas is $2 per gallon. About how much would the gas for a 978 mile trip cost

Question

This is from the mcdougal littell algebra 1 textbook 2007 edition on page 33.

Answer 1

The answer to this problem will come from the formula Cost = $/gal times (distance in miles ÷ miles per gallon)

 

C - $/gal x (D ÷ MPG)

 

C = $2.00/gal x ( 978 miles ÷ 28.5 mpg)

 

C = $2.00/gal x 34.3 gal

 

C = $68.63