A scientist needs 120Ml of a 20% acid solution for an experiment. The lab has available a 10% solution and a 25% solution. How m any millimeters of the 10% solution and how many millimeters of the 25% solution should the scientist mix to make the 20% solution?
1 answer:
Answer:
40ml of 10% and 80ml of 25%
Step-by-step explanation:
10x+25(120-x)=2400
-15x+3000=2400
15x=600
x=40
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