初一数学

2025-04-14 16:27:07
推荐回答(1个)
回答1:

设共有X棵树
100+1/10(X-100)=200+1/10(X-100-1/10(X-100)-200)得X=8100
班级数为:8100/(100+1/10(8100-100))=9