Ferdinand has a unlimited supply Of prune juice. He has a 3-liter and five-luter container and needs 4 liters feom the prune juice. How can he get 4 literas of prune juice

2 (5) - 2 (3) = 4

Step-by-step explanation:

Fill the 5-liter container, pour out 3 liters into the 3-liter container.

Empty the 3-liter container and pour the remaining 2 liters from the 5-liter container into the 3-liter container.

Refill the 5-liter container and use it to fill the remaining liter in the 3-liter container.

The 5-liter container will have 4 liters in it.