Formula help

[YOUNAN]

Hello,

I want to calculate cells when the date is 2013 or earlier I am using the following formula but it says its wrong, can anyone help me with this.

=countif(B34*400+C34*200, "=<2013")

Please advise

Thanks in advance

 

[YOUNAN]

Thank you very much, it worked like a charm.

 

[jtakw]

You're very welcome.