Answer:
predetermined overhead rate = $2,348,800 / $1,468,000 = 160% of direct materials
a) applied overhead rate to:
b) actual overhead rate = $2,485,000 / $1,635,000 = 152%
overhead cost that should have been applied:
Overhead costs were overapplied since real overhead was lower. The actual overhead rate was 1.52, while the predetermined rate was 1.6, so overhead costs were overapplied by 0.08 or 8%. Since total materials costs were $1,635,000, then overhead costs were overapplied by $1,635,000 x 0.08 = $130,800