From the following data below, determine the variable cost per unit, and the total fixed cost using the high and low method: Labour hours Repair expense 2,200 $2,300 2,300 2,500 1,900 2,000 1,200 2,000 1,200 2,000 900 1,500 700 1,400 1,100 1,400 1,400 1,600