Answer:
4.500
Explanation:
According with the information say that the $120.000 correspond to overhead to the rate of 75% of direct labor force, so you have to calculate the portion that is directed to the direct labor cost:
Direct labor cost: $120.000 * 75%
Direct labor cost: $ 90.000
Now you know that the average wages per hour of the direct labor force is $20. Now you have to divide the direct labor cost by the average salary per hour to calculate the number of hours worked in June.
Number of hours = $ 90.000/$20
Number of hours = 4.500