SOLUTION: Needs to prepare 32 ounces of a 12% hydrochloric acid solution. Find the amount of 16% soultion and the amount of 8% solution she should mix to get this solution

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Question 1134660: Needs to prepare 32 ounces of a 12% hydrochloric acid solution. Find the amount of 16% soultion and the amount of 8% solution she should mix to get this solution

Found 2 solutions by josgarithmetic, greenestamps:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
M=32
T=12
H=16
L=8
v, how much ounces of the higher concentration, H=16 percent solution
M-v, the amount of lower concentration, L=8 percent solution

Hv%2BL%28M-v%29=TM
Solve for v; substitute the given values; evaluate M-v.

Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


The ratio in which two ingredients need to be mixed to get a mixture that is a particular percentage between the percentages of the two ingredients is exactly determined by where the target percentage lies between the percentages of the two ingredients.

The 12% target is exactly halfway between the 8% and 16% of the two ingredients. The mixture should be made with equal parts of each.