SOLUTION: Find the amount of 5% hydrochloric acid that should be added to 60 mL of 20% acid to obtain a 10% solution.

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Question 434280: Find the amount of 5% hydrochloric acid that should be added to 60 mL of 20% acid to obtain a 10% solution.
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
.05m+.2(60)=.1(m+60)
.05m+12=.1m+6
.05m=6
m=6/.05=120
You need 120 mL of 5% solution for your mix