If a market buy order for 300 shares comes into the dealer, at what price will it be filled?

Third 100 shares are: ______

Bid Orders			Ask Orders
Price	Shares		Price	Shares
$49.75	100		$50.25	200
49.50	100		51.50	100
49.25	100		54.75	100
49.00	200		58.25	200
48.50	300