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5. The retail price of a certain refrigerator was Z dollars. Nina was given a further 10 percentdiscount on the already discounted sale price (Y) of this refrigerator. Given that the priceNina paid was X dollars, what was the dollar value of the extra 10 percent discount that sheobtained? 1. The sale price, Y, was 90 percent of the normal retail price, Z. 2. If the sale price, Y, had been 20 dollars more, then X would have been $14 less thanthis new value of Y.

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