Answer:
The amount of projected benefit obligation is on Dec 31 is $39 million
Step-by-step explanation:
The computation of the amount of projected benefit obligation is on Dec 31 as follows;
Beginning PBO $30 million
Service cost $10 million
Interest cost (10% × $30) $3 million
Loss (gain) on PBO $0
Less: benefits paid -$4 million
Ending PBO $39 million
Hence, the amount of projected benefit obligation is on Dec 31 is $39 million