Answer:
a.
Variable cost per unit is $41 per unit
b.
Total fixed cost is $153750
Step-by-step explanation:
The mixed costs are a type of cost that contains an element of both the Fixed and the variable costs in them. To calculate the variable component per unit present in a mixed cost, we use the high-low method. The formula for variable cost per unit under this method is,
Variable cost per unit = (Cost at highest activity level - cost at lowest activity level) / (Highest activity level - Lowest activity level)
The activity level here is the number of units.
The highest activity level is March.
The lowest activity level is January.
Variable cost per unit = (344400 - 221400) / (4650 - 1650)
Variable cost per unit = $41 per unit
The total fixed cost is = Total cost at any activity level - Variable cost component of total cost at that activity level
The total fixed cost is = 344400 - (41 * 4650) = $153750