Final answer:
The total relevant costs for Thermal Mugs amount to $2,200,000.
Step-by-step explanation:
The total relevant costs for Thermal Mugs can be calculated by considering the cost of producing the new lid as well as the unit price offered by Plato Plastics. The direct materials cost for the new lid is $1, and the direct labor cost is $6. Additionally, the avoidable fixed overhead cost per unit is $7, and the variable fixed overhead cost per unit is $6. By multiplying these costs by the number of lids required for current production levels (110,000), we can calculate the total relevant costs for Thermal Mugs.
Direct materials cost = $1 x 110,000 = $110,000
Direct labor cost = $6 x 110,000 = $660,000
Avoidable fixed overhead cost = $7 x 110,000 = $770,000
Variable fixed overhead cost = $6 x 110,000 = $660,000
Total relevant costs = Direct materials cost + Direct labor cost + Avoidable fixed overhead cost + Variable fixed overhead cost
Total relevant costs = $110,000 + $660,000 + $770,000 + $660,000
Total relevant costs = $2,200,000