Answer:
Option (b) is correct.
Explanation:
Given that,
Estimated annual overhead cost = $1,200,000
Actual annual overhead cost = $1,150,000
Estimated machine hours = 300,000
Actual machine hours = 280,000
Overhead Applied:
= (Estimated annual overhead cost ÷ Estimated machine hours) × Actual machine hours
= ($1,200,000 ÷ 300,000) × 280,000
= $1,120,000
Overhead over applied:
= Actual annual overhead cost - Overhead Applied
= $1,150,000 - $1,120,000
= $30,000