Fang, Xiaoling, Xiaoming and Xiaohong planted trees 120, of which the number of trees planted by Xiao Fang was half of the total number planted by the other three, and the trees planted by Xiaoling we

Fang, Xiaoling, Xiaoming and Xiaohong planted trees 120, of which the number of trees planted by Xiao Fang was half of the total number planted by the other three, and the trees planted by Xiaoling were planted by the other three. Small cube: 120*( 1/3)=40 trees.

Xiaoling: 120*( 1/4)=30 trees.

Xiaoming: 120*( 1/5)=24 trees

therefore

Xiaohong: 120=40-30-24=26 trees.

Explanation: "The number of trees planted in a small square is half of the total number of trees planted by other three people"-the number of trees planted in a small square can be regarded as 1, and the total number of other three people can be regarded as two, so the total number is ***3, and the small square accounts for 1/3 of the total. So the number of trees planted in a small square is 120*( 1/3)=40, and so on.