Answer:
allocated during the month 137,600
Step-by-step explanation:

To determinate the overhead rat, we distribute all the overhead cost over a cost driver. In this case it will be the labor hours
total overhead cost 335,400
direct labour hours 78,000
rate: 335,400 / 78,000 = 4.3
now we calculate the applied overhead
actual hours x rate
32,000 x 4.3 = 137,600
This will be amount allocated to work in process during the month