4. Kahil's Bookshop marks up all books by 40% of their cost. The overhead rate is 16% of the selling price. What is the net-profit rate on a book that costs Kahil's $18.10? a. 9.5% c. 12.6% b. 10.2% d. 44.0% 5. Ty Comer Deli purchases hot Chinese mustard for $1.12 per jar. It then sells the mustard to its customers for $2.19. The deli's overhead is 27% of the selling price. What is the net-profit rate based on selling price on each jar of mustard? a. 18.4% c. 21.2% b. 18.9% d. 21.9% 6. ZG Jewelers purchased fashion bracelets for $38.87. This jewelry store regularly marks up fashion merchandise 52% of the selling price. What is the minimum selling price that ZG Jewelers should charge? a. $57.20 c. $80.98 b. $59.23 d. $94.94 TT 1111