. The following are monthly totals taken from the log of laser printer used by the Hardcopy Printing International. Cost was based on a flat fee plus a declining cost per copy made after a minimum number of copies had been made each month.

Month	Number of Copies Made	Total Cost
July	38,720	$11,880
August	33,440	10,560
September	36,190	11,248
October	44,330	13,283
November	42,240	12,760
December	53,790	15,648

To differentiate the variable and fixed costs in the use of this machine for future planning, use the high-low method to (a) determine the variable cost per copy (round your answers to two decimal places) and (b) compute the fixed and variable costs for the months of August and December (round your answers to nearest whole number).