Question
If Oscar sells a necklace at a discount of 20% of the usual price, he will make a profit of $220. If he sells it at a discount of 30%, he will still make a profit of $40. Find the cost price of the necklace.
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If Oscar sells a necklace at a discount of 20% of the usual price, he will make a profit of $220. If he sells it at a discount of 30%, he will still make a profit of $40. Find the cost price of the necklace.