If you want to buy an item in a store that costs $50 and is on sale for 10% off, then how much would the item actually cost you after the discount?

Abaseball team drinks 10/4 gallons of water during a game. which mixed number represents the gallons of water consumed? a) 1 1/2 gallons b) 2 1/2 gallons c) 2 3/4 gallons d) 3 1/2 gallons