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21. At the end of April, the Manufacturing Overhead account of Askey Company showed a debit balance of P6,000 after overhead had been applied for the month. If the actual total manufacturing overhead cost incurred in April was P108,600) and if 8,550 units were produced in April, then the total (combined) rate for applying manufacturing overhead cost per unit is: 13.40 P13.00 C) P12.80 P12.00 S13.40 1081