Question

A punch recipe that serves 24 people calls for 4 L of lemon lime soda 2 pints of sherbet and 6 cups of ice how much of each ingredient would you need to make an identical recipe that serves 18 people

Answer 1

Divide each of the ingredients by 4 to make a recipe that serves 6 people:
1L of lemon lime soda
0.5 pints of sherbert
1.5 cups of ice

Multiply each of these new quantities by 3 to get a recipe that serves 18 people:
3L of lemon lime soda
1.5 pints of sherbert
4.5 cups of icee