A recipe for raspberry jelly calls for 5 cups of raspberry juice and cups of sugar. Find the amount of sugar needed for 6 cups of the juice?

For recipe of raspberry jelly,

5 cups of raspberry juice = sugar needed cups = cups

For 1 cup of raspberry juice, sugar needed = cup

∴ for 6 cups of the juice, sugar needed = cups

Hence, 3 cups of sugar needed for 6 cups of raspberry juice.