=IF(OR(B10="Boat",B10="Boat trailer"),C10+D10,"")

or if B10 will never contain any other Boat anything:

=IF(LEFT(B10,4)="Boat",C10+D10,"")

--
HTH

Sandy
In Perth, the ancient capital of Scotland
and the crowning place of kings


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"Kareinia" wrote in message
...
Could someone help me with this condition formula?

I need
If B10 equals, Boat or a Boat trailer, then add the hours of c10 into
d10

I would appreciate any help that you can give me.

Thanks so much!