Answer:
$50.50 per machine-hour
Step-by-step explanation:
The computation of the plant wide overhead rate is shown below:
Plant wide Overhear Rate = Estimated Manufacturing Overhead ÷ Expected Machine-hours
where,
Estimated Manufacturing Overhead = Estimated Indirect Labor + Estimated Factory Utilities
= $6,520,000 + $550,000
= $7,070,000
And, the expected machine hours is 140,000
So, the plant wide overhead rate is
= $7,070,000 ÷ 140,000 machine hours
= $50.50 per machine-hour