Answer:
945 bagels
Explanation:
21 ÷ 2 = 105
105= how many bagels per hour (1 hour = 105 bagels)
105 ×9 = 945
You divide the given number of bagels to the corresponding number of hours it took to make them and you will get how many bagels you make per hour.
You then multiply the number of bagels per hour with how many hours given, and you will get how many bagels you can make per given hours.
(i hope this makes sense, im bad at explaining things-)