Answer: 2400 pieces of candy
Explanation:
If there are 10 pieces in every box and 80 boxes are made every 2 hours than 800 pieces are made every 2 hours (which is 400 every hour, 200 every 30 minutes, and 100 every 15 minutes ) so you multiply 800 by 3 and get 2400 pieces every 6 hours.