Answer:
$50.50 per machine-hour
Explanation:
The computation of the company's plantwide overhead rate is shown below:
Estimated Manufacturing Overhead = Estimated Indirect Labor + Estimated Factory Utilities
= $6,520,000 + $550,000
= $7,070,000
and,
Expected Machine-hours = 140,000
So,
Plantwide Overhear Rate = Estimated Manufacturing Overhead ÷ Expected Machine-hours
= $7,070,000 ÷ 140,000
= $50.50 per machine-hour