For the given cost $212 and markup $44, complete the following parts. a. Find the rate of markup based on cost. b. Find the selling price. a. The rate of markup based on cost is %. (Round to the nearest tenth as needed.) b. The selling price is (Simplify your answer.) A lamp costs $36 and is marked up based on cost. If the lamp sold for $99, what was the percent of markup? The rate of markup is %