Give the step-by-step reasoning process and then the final answer. Six bottles of 2 liters of water cost $12. What is the price of 1 liter of water?
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Each bottle of 2 liters of water costs $12 / 6 = $2. So the cost of 1 liter of water is $2 / 2 = $1.
The final answer: 1.
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