No. of direct labor 815 Month .... Maintenance costs ($)....... hours Jan 8710. Feb 8500. Mar 8250. Apr 8670. May 8540. Jun 8470. 779 723 759 796 769 Using the high-low method, the company's [2 marks] (a) variable maintenance cost per direct labor hour (2 decimal places) is $ [2 marks] (b) fixed maintenance cost per month is $ [1 mark] (c) If the company's direct labor workforce works for 838 labor hours in July, the expected maintenance cost will be $