SOLUTION: How much 85% acid solution must be added to 50ml of a 25% acid solution to produce a mixture that is at 60%acid?

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Question 804021: How much 85% acid solution must be added to 50ml of a 25% acid solution to produce a mixture that is at 60%acid?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How much 85% acid solution must be added to 50ml of a 25% acid solution to produce a mixture that is at 60%acid?
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acid + acid = acid
0.25*50 + 0.85x = 0.60(50+x)
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25*50 + 85x = 60*50 + 60x
25x = 35*50
x = 70 ml (amt of 85% solution needed)
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Cheers,
Stan H.