A=TBhis is a nice question.

Basically QA is asking you: what percent of the combined mixture which is 23% iodine overall is A.

In other words, of the new mixture what % is made by the iodine labeled as A

This question could be solved quickly using weighted average

\(32A+17B=23(A+B)\)

After manipulation we do have

\(9A=6B\)

This means that the ration \(\frac{B}{A}=\frac{3}{2}\) or \(\frac{A}{B}=\frac{2}{3}\)

So in the solution A represents 2 parts and B 3 parts AND overall all parts add up to 5

So the ratio \(\frac{A}{Overall} = \frac{2}{5} = 40\)%

So quantity A is 40% and B is 38%

\(A > B\)

The answer to this question is A