The profit per Lube for Shop A is $8.31.
The profit per unit can be obtained by subtracting the cost of the product from the sale price.
Sales price per oil change = $275
Gross profit percent per oil = 39.1%
Cost of oil per gallon = $21.25
Selling price per gallon = $29.56 ($21.25 x 1.391)
Gross profit = $8.31 ($29.56 - $21.25)
Thus, the profit per Lube for Shop A is $8.31.
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