Answer:
Cost at the beginning:
Cost of SY-400 $40,443.00
Cost SY-403 $ 26,979.00
Cost at month end:
Cost of SY-400 $85,833.00
Cost of SY-403 $162,129.00
Cost of SY-404 $75429
Overhead was under-applied by $2,201.00
Step-by-step explanation:
At the beginning of the month costs of jobs SY-400 and SY-403 are the direct labor costs incurred already plus 70% of the direct labor cost as overhead applied:
Cost of SY-400=$23,790+($23,790*70%)=$40,443.00
Cost SY-403=$15,870+($15,870*70%) =$ 26,979.00
Costs at the end of the month would be cost at the beginning plus new direct labor cost incurred as well as the overhead on the new direct labor cost:
Cost of SY-400=$40,443.00+$26,700+($26,700*70%)=$85,833.00
Cost of SY-403=$ 26,979.00+$79500+(70%*$79500)=$162,129.00
Direct labor cost of SY-404=$150,570- $26,700-$79,500=$44370
Cost of SY-404=$44370+(70%*$44370)=$75429
Actual overhead is $107,600
Overhead applied=(70%*$44370)+(70%*$79500)+($26,700*70%)=$105,399.00
Under-applied overhead=$107,600-$105,399=$2,201.00