Question

Paul filled pint containers with 440 cups of water. How many pint containers did Paul need? 1 pint = 2 cups

Answer 1

Paul would have 220 pint containers!

440/2 =220

Because 1 pint = 2 cups

Answer 2

For this case we can make the following rule of three:
1pint ------> 2cups
x -----------> 440 cups
Clearing x we have:
x = (440/2) * (1)
x = 220 pint containers.
Answer:
Paul needs about:
x = 220 pint containers.