ICT paper 2 doubt.

[Yomna ElHabiby]

Paper 22 June 2011 step 45, when I write in the query design Delivered Price: [Cost Price]+[Cost Price*10%] a box appears that says " Enter a parameter value". What does this mean? And how can I solve it?

 

[RyanLiTN]

Try Delivered Price: [Cost Price]+[Cost Price]*10%