Prelia's Storage ran its freezer in February, a slow month, for 378 hours for a total cost of $61,230. In July, a peak month, the freezer ran for 756 hours for a total cost of $87,690
Required:
a. What is the cost estimating equation for the department if hours of freezer use are used as the cost driver?
b. What is the estimated total cost at an operating level of 600 hours?
Answer:
a. Slope (variable costs) = ($87,690 − $61,230) / (756 − 378) = $70
Constant (fixed cost) = $87,690 − (756 × $70) = $34,770
Estimating equation = $34,770 + ($70 per direct labor hour × number of direct labor hours)
b. Total costs of 600 hours = $34,770 + ($70 × 600) = $76,770
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