Mathematics, 29.06.2019 08:30 aj567

Two cars got an oil change at the same auto shop. the shop charges customers for each quart of oil plus a flat fee for labor. the oil change for one car required 5 quarts of oil and cost $20.30. the oil change for the other car required 7 quarts of oil and cost $22.80. how much is the labor fee and how much is each quart of oil?

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