Digital Devices plans to stop carrying the Casio FC-100 calculator. It normally marks up the calculator from the $54.60 wholesale cost to the regular selling price of $117.95. a. What is the normal rate of markup on selling price? (Do not round intermediate calculations and round final answer to 1 decimal place.) Rate of markup b. What rate of markdown can be advertised if Digital Devices wishes to clear out the stock at the wholesale cost?