Using Ratios to Solve Application Problems
Kory is having a pool party. She wants to buy 7\displaystyle {7} gallons of water for every 4\displaystyle {4} guests.

If Kory invites 12\displaystyle {12} guests, how many gallons of water should she buy?

Kory should buy gallons of water\displaystyle \text{gallons of water}