Answer:
10.30
Explanation:
20
8000
160 000 June
10000
200 000 July
20 - 3.20 -4 - .50 -2 = 10.30
costs:Printing and binding...............................$3.20 per copyBookstore discounts................................$4.00 per copySalespersons’ commissions....................$0.50 per copyAuthor’s royalties...................................$2.00