Prope Cuick Check retail buyer purchased some pedometers at a cost of $12 and will sell them for $16 Whut is the percent of markup based on cost? Round to the nearest tenth of a percent Quick Check Target sells a2 pack of cotton socks for $4.99. If the markup is 30% on cost. how much can they afford to pay for the socks (cost)? Round to the nearest cent. Quick Check The selling price of a telescope is $64.99. If the markup is 40% of cost, find the cost and the markup to the nearest cent