Fundamentals of Cost Accounting 2nd Edition by William Lanen, Carolyn Wells, Michael Maher

Exercise 8

Estimate Machine-Hours Worked from Overhead Data
Kiwi Corporation estimated that machine-hours for the year would be 40,000 hours and overhead (all fixed) would be $160,000. Kiwi applies its overhead on the basis of machine-hours. During the year, all overhead costs were exactly as planned ($160,000). There was $22,000 in overapplied overhead.
Required
How many machine-hours were worked during the period Show computations.