If someone has 3 pieces of bread, and his toaster is broken, and he can only toast one side at a time, how long would it take to toast every side of every bread? If the toaster can hold 2 pieces of bread at a time, and it takes 1 minute to toast one side?
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1st minute : toast A1 and B1
2nd minute : toast A2 and C1
3rd minute : toast B2 and C2