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njhannans15
I believe the earnings are $240 for the cars and $200 for the trucks.

If the car wash is $8 and the wax is $12, multiply 12 x 8 = 96 and 12 x 12= 144. Add 144 to 96 to get 240.

If the truck wash is $10 and the wax is $15, multiply 8 x 10 = 80 and 8 x 15 = 120. Add 120 to 80 to get 200. Hope this helps!

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