The usual retail price of an item is $100. The manufacturer's cost to produce the item is $40. Retailers take a 50 percent markup and wholesalers take a 10 percent markup (markup is calculated on selling price, unless otherwise is indicated).
a. What is the retailer's markup in dollars?______________________________
b. What is the wholesale price?_______________________________________
c. What is the manufacturer's price?___________________________________
d. What is the manufacturer's markup percentage? _______________________