Nels needs 15 gallons of lemonade for a company picnic. If he buys the lemonade in quart bottles, how many bottles does Nels need to buy?

Respuesta :

Ok so I know that there are 4 quarts in 1 gallon. So if there are 15 gallons, I need to multiply 15×4 to get my answer of how many quarts are in 15 gallons. 
So:    15
     ×     4
       ______
           60 quarts

So Nels needs to buy 60 quarts bottles.