Solution: 1 Set strawberry seed X ridge and tomato seed (24-X) ridge according to the meaning of the question.

15x+30(24-x)& lt； =540, x > is obtained; = 12, because x

2. If the grass species X Ridge, Grass and West * * * can make a profit of Y yuan, then Y =1.6 * 50x+1.1*160 * (24-x) =-96x+4224. Because k =-96

* stands for multiplication symbol,