On the tree planting day, each student of a class plants 6 trees on average. If it is done by girls alone, each student should plant 15 trees, then it is done by boys alone, and each student should plant () A. 9 trees B. 10 trees C. 12 trees D. 14 trees

On the tree planting day, each student of a class plants 6 trees on average. If it is done by girls alone, each student should plant 15 trees, then it is done by boys alone, and each student should plant () A. 9 trees B. 10 trees C. 12 trees D. 14 trees

Suppose that it is completed by boys alone, and each person should plant x trees. Then according to the meaning of the question, we can get the equation: 1 x + 115 = 16, and the solution is: x = 10. The test shows that x = 10 is the solution of the equation. Therefore, it is completed by boys alone, and each person should plant 10 trees

On the tree planting day, each student of a class plants 6 trees on average. If it is done by girls alone, each student should plant 15 trees, then it is done by boys alone, and each student should plant ()
A. 9 trees B. 10 trees C. 12 trees D. 14 trees

Suppose that it is completed by boys alone, and each person should plant x trees. Then according to the meaning of the question, we can get the equation: 1 x + 115 = 16, and the solution is: x = 10. The test shows that x = 10 is the solution of the equation. Therefore, it is completed by boys alone, and each person should plant 10 trees

On tree planting day, each student in a class should plant 6 trees on average. If it is only done by girls, each student should plant 15 trees. If it is only done by boys, how many trees should each student plant

Total trees = 6x (M + n) = 15m n 6m + 6N = 15m 2n = 3M, that is, 15m = 10N, 10 trees for each boy

On tree planting day, the average person in a class should plant 6 trees. If it is only done by girls, each person should plant 15 trees. If it is only done by boys, how many trees should each person plant?

Female: male = 2:3
If it is only done by boys, 10 trees should be planted per person