SOLUTION: I NEED HELP SOVING THIS PROBLEM. I KEEP COMING UP WITH NEGATIVE ANSWER. HOW MUCH WATER SHOULD BE ADDED TO 30 GALLON OF A SOLUTION THAT IS 70%ANTIFREEZE IN ORDER TO GET A MIXTURE

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Question 27791: I NEED HELP SOVING THIS PROBLEM. I KEEP COMING UP WITH NEGATIVE ANSWER.
HOW MUCH WATER SHOULD BE ADDED TO 30 GALLON OF A SOLUTION THAT IS 70%ANTIFREEZE IN ORDER TO GET A MIXTURE THAT IS 60%ANTIFREEZE
I CAME UP WITH -48
PLEASE HELP ME SOLVE THANK YOU
Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
0.7(30)=0.6(x+30)
21=18+0.6x
0.6x=3
x=5

Hence, about 5G of solution must be added.
Paul.