MC Qu. 107 The following information is available... The following information is available for a company's utility cost for operating its machines over the last four months. Month Machine hours Utility cost January 900 $ 5,450 February 1,800 $ 6,900 March 2,400 $ 8,100 April 600 $ 3,600 Using the high-low method, the estimated variable cost per unit for utilities is: Multiple Choice $6.17. $2.50. $4.22. $6.00. $3.38.