1.

In what ratio should a 20% methyl alcohol solution be mixed with a 50% methyl alcohol solution so that the resultant solution has 40% methyl alcohol in it?

A. 1 ∶ 2
B. 2 ∶ 1
C. 1 ∶ 3
D. 2 ∶ 3
Answer» B. 2 ∶ 1


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