SOLUTION: If 800ml of a juice drink is 10% grape juice, how much grape juice should be added to make a drink that is 20% grape juice?
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Question 538565: If 800ml of a juice drink is 10% grape juice, how much grape juice should be added to make a drink that is 20% grape juice? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! If 800ml of a juice drink is 10% grape juice, how much grape juice should be added to make a drink that is 20% grape juice?
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Equation:
grape + graph = grape
0.10*800 + 1x = 0.20(800+x)
Multiply thru by 100 to get:
10*800 + 100x = 20*800 + 20x
80x = 10*800
x = 100 ml (amt. of pure grape needed)
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Cheers,
Stan H.
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