A restaurant has a food operation with a 30% variable cost and a bar operation with a 20% variable cost. The food operation produces 60% of total sales revenue and the bar 40%. If the restaurant owner wanted an extra $7,500 in operating income, and the added income was to come from just the bar sales, by how much would bar sales revenue only have to increase to provide this added profit?

		$9,375
		$10,375
		$10,000
		$15,375