Mathematics, 29.04.2021 07:30 alex7449
A 20% acid solution is mixed with a 70% acid solution to get 100 liters of a 40% solution. If x = amount of 20% solution and y = amount of 70% solution, then 0.2x + 0.7y = ___ liters.
40
20
70
90
Answers: 2
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A 20% acid solution is mixed with a 70% acid solution to get 100 liters of a 40% solution. If x = am...
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