During the Arbor Day, two schools planted trees, and the number of trees planted in Shihai Middle School was twice less than that in Lidong Middle School. How many trees have been planted in each school?

answer

Li Dong Middle School planted 279 trees and Shihai Middle School planted 555 trees.

There are 16 workers in a workshop, each of whom can process 5 type A parts or 4 type B parts every day. Of these 16 workers, some process Class A parts, and the rest process Class B parts. It is known that each type A part can make a profit 16 yuan, and each type B part can make a profit in 24 yuan. If this workshop makes a profit of 654,300 yuan.

answer

On this day, six workers were processing A-class parts.

Why is the solution of this equation about twice as good?

answer

m=- 1/4