Answer:
Total cost at 450 machine hours = $23625
Step-by-step explanation:
The high-low method is used to calculate the variable cost per unit element in a mixed cost. A mixed cost is a cost which is made up of both the fixed and the variable cost. The formula for variable cost per unit is,
Variable cost per unit = (Highest activity cost - Lowest activity cost) / (Highest activity units - Lowest activity units)
Variable cost per unit = (36000 - 14000) / (900 - 100)
Variable cost per unit = $27.5
Thus, the fixed element is = 36000 - (27.5 * 900)
Fixed cost element = $11250
Thus, the cost equation is,
Total cost = 27.5x + 11250
Where x is the number of machine hours.
Total cost at 450 machine hours = 27.5 * 450 + 11250
Total cost at 450 machine hours = $23625