Respuesta :
The answer would be 10 because for every 3 bagels of cake Erin uses 2 boxes of cake mix.
Boxes of cake mix | bags of cake mix
2| 3
4|6
6 |9
8 |12
10|15
Boxes of cake mix | bags of cake mix
2| 3
4|6
6 |9
8 |12
10|15
