In a certain store, the regular price of a refrigerator is $600. how much money is saved by buying this refrigerator at 20 percent off the regular price rather than buying it on sale at 10 percent off the regular price with an additional discount of 10 percent off the sale price?

Regular price of a refrigerator = $ 600 20 percent off = 600 * 20/100 Discount = $ 120 the price is =600-120 = $480 ON SALE regular price of a refrigerator = $ 600 10 percent off = 600 * 10/100 Discount = $ 60 the price is =600-60 = $540 additional discount of 10 percent= $540 * 10/100 = $54 the price is = $540 - $54= $486 Therefore the regular discount is best to buy 

It is 580 dollars because if you divide 600$ by 20 % you get 120 $  than you subtract  600 - 120 =580

A. -10 is the value of x