Private Sub Command1_Click()
Dim iSueldo As Integer
Dim iResult As Integer
iSueldo = Text1
Select Case iSueldo
Case Is <= 300
iResult = ((iSueldo * 15) / 100) + iSueldo
Case Is > 300 <= 400
iResult = ((iSueldo * 12) / 100) + iSueldo
Case Is > 400
iResult = ((iSueldo * 10) / 100) + iSueldo
End Select
Label1.Caption = iResult
End Sub