The following data is available for Sheffield Repair Shop for 2022 : The desired profit margin is $30 per labor hour. The material loading charge is 40% of invoice cost. It is estimated that 5000 labor hours will be worked in 2022. In January 2022, Sheffield repairs a bicycle that uses parts of $120. Its material loading charge on this repair would be $48.00 $214.00 $136.00. $72.00