SOLUTION: YOU ARE MAKING JUICE FOR A FRIENDS BIRTHDAY PARTY. YOUR RATIO OF WATER TO ORANGE JUICE CONCENTRATE IS 7:3. YOU MAKE 80 CUPS OF ORANGE JUICE IN ALL. AT THE PARTY, YOU AND YOUR FRIEN

Question 1184747: YOU ARE MAKING JUICE FOR A FRIENDS BIRTHDAY PARTY. YOUR RATIO OF WATER TO ORANGE JUICE CONCENTRATE IS 7:3. YOU MAKE 80 CUPS OF ORANGE JUICE IN ALL. AT THE PARTY, YOU AND YOUR FRIENDS DRINK 3/4 OF ALL THE ORANGE JUICE YOU MADE. HOW MANY CUPS OF ORANGE JUICE CONCENTRATE ARE LEFT? HOW MANY CUPS OF WATER ARE LEFT?
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52797) (Show Source): You can put this solution on YOUR website!
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Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Here is only part of the solution, but not the completely finished solution.

n, how many cups of the Orange Juice Concentrate
w, how many cups of water

:

and from this,

Maybe you could go through the rest of a solution and solve the question asked for.
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