A person mixes two liquids, x and y. One litre of x weighs approximately 900 g, and one litre of y weighs approximately 750 g. If one litre of the mixture weighs approximately 800 g, then the percentage of x in the mixture is:
1
30%
2
\(33 \frac{1}{3} \%\)
3
50%
4
\(27 \frac{1}{2} \%\)