Rodney runs Handheld Hardware Inc. in Mississauga, Ontario. He purchases 490 phones from a distributor with trade discounts of 14% and 7% on the list price of $50 per phone. He sold 288 phones at the regular selling price of $82 each and offered a markdown of 20% on the next 59 phones. To ensure that he completes the stock, he sold the rest at break-even. The store's overhead expenses are 9% on cost.

a. Calculate his total profit or loss made from the sale of the phones.

Round to the nearest cent

b. What is the rate of markdown from the original selling price for the remaining phones that are being sold at break even?

%

Round to two decimal places