SOLUTION: How many cups of grapefruit juice must be added to 50 cups of a punch that is 6% grapefruit juice to obtain a punch that is 10% grapefruit juice?

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Question 988893: How many cups of grapefruit juice must be added to 50 cups of a punch that is 6% grapefruit juice to obtain a punch that is 10% grapefruit juice?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
50 cups punch, 6% grapefruit;
want mixture be 10% grapefruit;
how many cups grapefruit (juice)?
g, how many cups grapefruit juice to add.

%2850%2A6%2Bg%2A100%29%2F%2850%2Bg%29=10

You should understand the equation perfectly, otherwise THAT is how you need any help. If your understanding is good, then just solve for g.