Answer:
120
Step-by-step explanation:
Average total cost = average fixed cost + average variable cost
average fixed cost = Total fixed cost / quantity
40 + 80 = 120
Fixed costs are costs that do not vary with output. e,g, rent, mortgage payments
average variable cost = total variable cost / quantity
Variable costs are costs that vary with production. Hourly wage costs and payments for production inputs are examples of variable costs