From the given table 4 cups of punch need 3 cups of water
Then we can use the ratio method to solve the question
Punch: Water = 4: 3
Since we need 48 cups of punch, then
Punch: Water
4. 3
48. x
By using cross multiplication

Divide both sides by 4

To make 48 cups of punch you need 36 cups of water
The answer is C