An antique dealer usually charges 20 percent more than his purchase price any vase sold in his store. during a clearance sale, all items are marked 10 percent off. if the dealer sells a vase during the clearance sale, his profit on the vase(sale price minus purchase price) is what percent of the purchase price of the vase? a. 8%b. 9%c. 10%d. 11%e. 12%