A service station gives a $20 discount to customers who purchase an oil change and a tune-up at the same time. What is

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A service station gives a $20 discount to customers who purchase an oil change and a tune-up at the same time. What is the price of an oil change alone?

(1) If purchased separately, the oil change and the tune-up cost $80, and the tune-up costs 10 percent less than the oil change.

(2) If the oil change and tune-up are purchased together, the total price is 25 percent less than the total price of the two purchased separately.


OA A

Source: Princeton Review
Source: — Data Sufficiency |