Question

Alicia Whitman rented a station wagon for her vacation. The wagon rented f $35.40 per day plus 21c per mile. She used the wagon for 7 days. She paid $54.20 for gasoline during her 620-mile drive. What is her cost per mile to the nearest cent?

Answer 1

The cost per mile is
`\$0.70`

Explanation:

Let

C-----> the total cost

R----> the cost of the rented wagon

G----> the cost of gasoline

we know that

The total cost is equal to

`C=R+G`

step 1

Find the cost of the rented wagon

`R=35.40(7)+0.21(620)=\$378`

step 2

Find the total cost

`C=R+G`

we have

`R=\$378`

`G=\$54.20`

substitute

`C=\$378+\$54.20=\$432.20`

step 3

Find the cost per mile

Divide the total cost by the number of miles

`\$432.20/620=\$0.70`