Summer 20 Co used the estimates below to calculate a predetermined overhead rate based on direct labor costs. What is their predetermined overhead rate?

Estimates at the start of the period:
Total manufacturing overhead costs	$166,400
Total direct labor costs	$320,000
Total direct labor hours	10,000
Actual totals by the end of the period:
Manufacturing overhead costs	$164,000
Direct labor costs	$360,000
Direct labor hours	9,800