SOLUTION: a chemist is mixing a solution that is 2% acid and another solution that is 8% acid. She needs to make 75 mL of a solution that is 5% acid. How much of each solution should she use

Question 1139269: a chemist is mixing a solution that is 2% acid and another solution that is 8% acid. She needs to make 75 mL of a solution that is 5% acid. How much of each solution should she use?
Found 2 solutions by Alan3354, josgarithmetic:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
a chemist is mixing a solution that is 2% acid and another solution that is 8% acid. She needs to make 75 mL of a solution that is 5% acid. How much of each solution should she use?
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5 is the average of 2 & 8.
---> equal amounts.
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!
x, amount of the 8% acid
75-x, amount of the 2% acid

Want 75 mL of 5% acid solution --

-

-----------------and do you see that this is HALF the intended volume of the mixture?
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