Who will score 50 points?

The number of peach trees is less than that of citrus 1/5. According to a key sentence, it is the ratio of the number of peach trees to the number of oranges. The unit of citrus is 1, and the number of peach trees is 1* 1/5= 1/5, that is, the number of peach trees is 1.

The number of willow trees is 2/3 less than that of pine trees. According to a key sentence, it is the ratio of the number of willows to the number of pines. If the unit of pine trees is 1 * 2/3 = 2/3, then the number of willows is 1-2/3= 1/3.