Solve the Problem $20 \%$ Alcohol Solution Must Be Mixed with 90 Liters of A Alcohol

question 64

Multiple Choice

Solve the problem.
-How many liters of a $20 \%$ alcohol solution must be mixed with 90 liters of a $80 \%$ solution to get a $40 \%$ solution?

• A) \(27 \mathrm {~L}\)
• B) \(18 \mathrm {~L}\)
• C) \(180 \mathrm {~L}\)
• D) \(270 \mathrm {~L}\)

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