=if(and(a1>=1,a1<=10),1.5,if(and(a1>=11,a1<=20),1.2,if(a1>=21,1)))
比如你的数据在A列,从A1开始给你一个简单的:=IF(A1<11,1.5,IF(A1<21,1.2,1))
=IF(AND(A1>=1,A1<=10),1.5,IF(AND(A1>=11,A1<=20),1.2,IF(A1>=21,1,"")))
=IF(AND(B3>=1,B3<=10),1.5,IF(AND(B3>=11,B3<=20),1.2,1))