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home		Percentage profit
		(click a problem to attempt)
		Percentage profit when cost = $6, selling price = $9.

		Percentage profit when cost = $15, selling price = $18

		Percentage profit when cost = $3.50, selling price = $4.90.

		Percentage profit when cost = $9, selling price = $9.45.

		Percentage profit when cost = $4.80, selling price = $6.24.