SOLUTION: Solve: How many ml of a 70% acid solution must be added to a 30% acid solution to get 100 ml of a 40% acid solution?

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Question 384188: Solve: How many ml of a 70% acid solution must be added to a 30% acid solution to get 100 ml of a 40% acid solution?

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
How many ml of a 70% acid solution must be added to a 30% acid solution to get 100 ml of a 40% acid solution?
:
Let x = amt of 70% solution required
then
(100-x) = amt of 30% solution required
:
.70x + .30(100-x) = .40(100)
:
You should be able to do this now.