Answer:
a. Cost of goods sold = Sales - Gross profit
= $416,720 - $242,950
= $173,770
b. Direct materials cost = Materials purchased -Indirect materials - Materials inventory, end of period
= $128,350 - $45,220 - $17,090
= $66,060
c. Direct labor cost =Total manufacturing costs for the period - Direct materials cost - Factory overhead
= $239,610 - $66,060 - ($90,430 + $45,220 + $13,750)
= $239,610 - $66,060 - $149,380
=$239,610 - $215,440
=$24,170