If an item retails for $39.99 after having a $20 markup, what is the markup percent? 18. If an item retails for $100 and only costs $45, what is the markup percent? D 19. If an item retails for $24.95 and only costs $8.95, what is the markup percent? O A A 20. If an item retails for $20 after having a 60% markup, what is the markup dollar? C A 21. If an item retails for $120 after having a 57% markup, what is the markup dollar? 22. If an item retails for $80 after being marked up by 70%, what was the dollar amount of the cost?