I'm stuck on this math problem: Katie's mother wants to get granola bars for all the kids to eat after Katie's soccer game. There will be 30 kids playing soccer, including Katie. Katie's mother wants to get 2 granola bars for each kid, since the bars are not that big and she figures the kids will be very hungry. Each box of granola bars has 12 bars in it. How many boxes should Katie's mother buy?
Can you help?