Answer:
Why are you gonna cry?
The donut store uses 3 bags of flour for 15 birthday donuts.
15/3 = 5
1 x 5 = 5, 2 x 5 = 10, 3 x 5 = 15, 4 x 5 = 20, 5 x 5 = 25, etcetera, etcetera.
