The Equipment Maintenance Department of Kason Inc. has incurred the following costs during the past five months:

Month Production Total cost July. 1,000 units. $45,550 August. 1,500. 52,000 September. 2,100. 61,500 October. 1,800. 57,500 November. 750. 41,250

Using the Hi-Lo method, determine the variable cost per unit, and the fixed cost per month.