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Harrold, Inc., a manufacturer of plastic products, reports the following manufacturing costs and Harrold, Inc., produced 77,500 units of product in 2020 . Harrold's management is estimating account analysis classification for the year ended December 31, 2020. costs for 2021 on the basis of 2020 numbers. The following additional information is available (Click the icon to see the account information.) for 2021. (Click the icon to see the additional information.) Requirement 1. Prepare a schedule of variable, fixed, and total manufacturing costs for each account category in 2021 . Estimate total manufacturing costs for 2021. To assist you, begin by selecting the formula to calculate the variable cost for each account in 2021 . Data table More info a. Direct materials prices in 2021 are expected to increase by 8% compared with 2020 . b. Under the terms of the labor contract, direct manufacturing labor wage rates are expected to increase by 12% in 2021 compared with 2020 . c. Power rates and wage rates for supervision, materials handling, and maintenance are not expected to change from 2020 to 2021. d. Depreciation costs are expected to increase by 5%, and rent, property taxes, and administration costs are expected to increase by 9%. e. Harrold expects to manufacture and sell 82,500 units in 2021 . Requirements 1. Prepare a schedule of variable, fixed, and total manufacturing costs for each account category in 2021. Estimate total manufacturing costs for 2021. 2. Calculate Harrold's total manufacturing cost per unit in 2020 , and estimate total manufacturing cost per unit in 2021. 3. How can you obtain better estimates of fixed and variable costs? Why would these better estimates be useful to Harrold