Answer:
use vlookup on the table or columns or cell ranges that have the order number, item description and cost per order.
=vlookup(value to lookup, table, the value you want )
syntax:
=VLOOKUP(search_key, range, index)
Explanation: In my example, I use the above syntax in cells g2 and g3 and point the search_key(value to lookup) to the cell above G1 so that I can lookup the order numbers in the table that is to the left. The values are then populated in cells G2 and G3
I have attached this exam as an open office spreadsheet.