# Eli took the fleet of 8 vans for oil changes. All of the vans needed windshield wipers which cost per van. The total bill was $432. How do you write an equation to$24 find out what each oil change cost and solve the equation?

I think that the $24 landed in the wrong place....! #### Explanation: You have $8$vans so that you'll need for sure to spend: 8xx24=$192 for the wipers.
Let us call the cost of one change of oil $x$ so that you get for the total and for the $8$ vans:
$8 x + 192 = 432$
x=(432-192)/8=\$30 which is the cost of one oil change.