Dermot

you don't need the sum, but add *.9 at the end, e.g.

=(D4*F4)*.9

--

HTH
Nick Hodge
Microsoft MVP - Excel
Southampton, England
DTHIS
web: www.nickhodge.co.uk
blog (non tech): www.nickhodge.co.uk/blog


"dermot martin cleary" <dermot martin
wrote in message ...
If someone is staying in a hotel for two nights @ ‚¬80 per night.I go
=sum(d4*f4)enter and get ‚¬160 how do i then give a 10% discount ?.