He volunteers 2*12=<<2*12=24>>24 times a year

So he volunteers for 24*3=<<24*3=72>>72 hours

# Answer

72
Question:
John volunteers at a shelter twice a month for 3 hours at a time.  How many hours does he volunteer per year?
Answer:
Let's think step by step.

user
72
John volunteers at a shelter twice a month for 3 hours at a time.  How many hours does he volunteer per year?
train