The students of the two classes participated in the tree planting activities. They were divided into a group of saplings. Class one got 100 more trees than three tenths of the total number, and class two got 50 less trees than three fifths of the total number. How many saplings are there in total

The students of the two classes participated in the tree planting activities. They were divided into a group of saplings. Class one got 100 more trees than three tenths of the total number, and class two got 50 less trees than three fifths of the total number. How many saplings are there in total

(100-50)÷（1-3/5-3/10)
=50÷1/10
=500
We can also set X:
Let the total number be X;
　　x-（3/10x+100）=3/5x-50
It is reduced to 7 / 10x-100 = 3 / 5x-50
The solution is x = 500

There are two classes of students to participate in tree planting work, a total of a batch of saplings, a class of trees than three tenths of the total number of 100, two classes of trees than the total
Three fifths of the two seedlings are less than 50. How many seedlings are there in this batch?

(100-50)÷（1-3/5-3/10)
=50÷1/10
=500

How many saplings are there in this batch?
There are two classes of students to participate in tree planting work, one is divided into a batch of seedlings, the number of trees shared by class one is more than 30% of the total number of 100 trees, and the number of trees shared by class two is less than 60% of the total number of 50 trees. How many seedlings are there in this batch?

1) 100÷(1-30%-50%)
=100÷20%
=500 trees
2)(100-50)÷(1-30%-60%)
=50÷10%
=500 trees

Planting trees, the first day planted seedlings is 30% of the total, the next day planted 100 trees, a total of trees is half of the total. Students planted a total of how many trees?

Total species: 100 (1 / 2-30%) = 500