During August, the receipts and distributions of Material No. B4G9 are as follows: Received Aug. 31,100 units at $15 161,700 units at $17 29 900 units at $18 Issued Aug. 11 700 units for Job 116 181,900 units for Job 117 30 800 units for Job 118 a. Determine the cost of each of the three issues under a perpetual system, using the first-in, first-out method.