A crate containing 16 bags of powdered milk weighs of 63.2 lbs. The weight of the empty crate is 2.4 lbs. Select all equations that can be solved to find the weight of one bag of powdered milk.
1. 63.2 = 18.4b
2. 63.2 = 2.4 + 16b
3. 60.8 = 16b
4. b = 60.8/16
5. 60.8b = 16

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