Marcy keeps a 2-liter bottle of water by her desk. She takes a sip every five minutes, and each sip is 40 ml. How many minutes does it take her to drink the whole bottle of water? Let's think first. Chain of thought:
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First find the total number of milliliters in the bottle: 2 liters * 1000 ml / liter = 2000 ml. Then divide the total number of milliliters by the amount she drinks per sip: 2000 ml / 40 ml = 50 sips. Then multiply the number of sips by the time per sip to find the time it takes her to drink the bottle: 50 sips * 5 minutes / sip = 250 minutes.
Therefore, the answer is 250.
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