Solution \(A\) and solution \(B\) both contain only water and alcohol. If \(A\) and \(B\) are mixed, what will be the percentage of alcohol in the resultant solution?
1) \(A\) and \(B\) are mixed in the ratio \(4{:}1\)
2) \(A\) and \(B\) each contain \(10\%\) alcohol
OA B