The Jars II Free Maths Puzzle

The Jars II is a simple puzzle game based on basic mathematical logic. The bar serves Draft Beer. Some customers demand that a certain exact quantity of beer be placed on their table. Unfortunately, the bar does not have a pint or quart measure to draw the exact quantity from the cask. It however has 2 jars which hold exactly 5 and 3 pints. The first exercise is to draw 4 pints. The second and third exercises are if the capacity of the 2 jars are 7 & 4 to draw exactly 5 or 6 pints. you must return any excess beer to the Cask when done. Logic suggests that with 3 operations this can be done: FILL a jar from the Cask. POUR between the jars. EMPTY a jar into the cask.