SOLUTION: how many cups of grapefruit juice must be added to 40 cups of punch that is 5% grapefruit juice to obtain a punch that is 10% gragefruit juice?
Question 882528: how many cups of grapefruit juice must be added to 40 cups of punch that is 5% grapefruit juice to obtain a punch that is 10% gragefruit juice? Answer by josgarithmetic(39617) (Show Source):