Babcox Manufacturing uses a predetermined manufacturing overhead rate based on direct labor hours to allocate manufacturing overhead to jobs. Selected data about the companys operations follows:

Actual manufacturing overhead cost	$400,000
Estimated manufacturing overhead cost	$420,000
Estimated direct labor cost	$180,000
Estimated direct labor hours	70,000
Actual direct labor hours	65,000
Estimated machine hours	80,000
Actual machine hours	84,000

By how much was manufacturing overhead overallocated or underallocated for the year? -Answer is $10,000 underallocated I'm confused on how to solve this