Class 51 is divided into three groups to plant trees. The first group has 15 people to plant 6 trees, the second group has 18 people to plant 7 trees, and the third group has 24 people to plant 13 trees?

Class 51 is divided into three groups to plant trees. The first group has 15 people to plant 6 trees, the second group has 18 people to plant 7 trees, and the third group has 24 people to plant 13 trees?

15÷6=2.5
18÷7=2.6
24÷13=1.8
2.6＞2.5＞1.8

For a tree planting group, if each plant 5 trees, there will be 14 trees left; if each plant 7 trees, there will be 4 trees left. How many people are there in this group? How many trees will be planted?

(14 + 4) / (7-5) = 18 / 2, = 9 (people). 9 × 5 + 14 = 45 + 14, = 59 (trees). A: there are 9 people in this group, and a total of 59 trees will be planted

A total of 13 students from the third group of class 5, grade 4 went to the park to plant trees. Each boy planted 6 trees, and each girl planted 4 trees, a total of 64 trees?
(it's about the formula! And the unit!)

Boys (64-4x13) / (6-4) = 12 / 2 = 6
Girls 13-6 = 7