What amount of a 40% acid solution must be mixed with 200 mL 10% solution to produce a 20% solution?
1 answer:
Answer:
Step-by-step explanation:
(x + 200)20 = 200(10) + x(40)
20x + 4000 = 2000 + 40x
2000 = 20x
X = 100 mL
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The answer is C. hope this helped
