如图所示:
2月销售额:=SUMPRODUCT((MONTH(A1:A5)=2)*(B1:B5="销售")*C1:C5)2月办公费:=SUMPRODUCT((MONTH(A1:A5)=2)*(B1:B5="办公费")*C1:C5)总销售额:=SUMIF(B:B,"销售",C:C)