Regarding the preparation of solutions
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It is known that solution M contains 15% A, 15% C, and 70% E, while solution Q contains 15% B and 85% E. How can new solutions be prepared using M and Q so that they contain 3% A, 5% B, 3% C, 15% D, and 74% E?
It is impossible to prepare the solution desired by the original poster using only M and Q solutions. Firstly, neither M nor Q contains the D component. Without considering component D, M and Q alone cannot ultimately be combined to achieve the ratio required by the original poster. Of course, it is still possible to use M and Q together with the D\E solution. The original poster had better confirm