Dmitri needs 6 liters of a $14 \%$ solution of sulfuric acid for a research project in molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of the $18 \%$ solution and the other an unlimited supply of the $12 \%$ solution. How many liters of each solution should Dmitri use?
A) $4 \mathrm{~L}$ of $18 \%$ solution; $2 \mathrm{~L}$ of $12 \%$ solution
B) $2.5 \mathrm{~L}$ of $18 \%$ solution; $3.5 \mathrm{~L}$ of $12 \%$ solution
C) $2 \mathrm{~L}$ of $18 \%$ solution; $4 \mathrm{~L}$ of $12 \%$ solution
D) $1.5 \mathrm{~L}$ of $18 \%$ solution; $4.5 \mathrm{~L}$ of $12 \%$ solution

Question

Quizplus · Accepted Answer

To find the correct mixture, set up the equation: $0.18x + 0.12(6-x) = 0.14 \times 6$. Solving gives $x = 2$ liters of $18\%$ solution and $6-x = 4$ liters of $12\%$ solution.

Dmitri Needs 6 Liters of A 14%14 \%14% Solution of Sulfuric Acid for a Research Project in Molecular

Dmitri Needs 6 Liters of A $14 \%$ Solution of Sulfuric Acid for a Research Project in Molecular