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A refrigerator cools a bottle of water 2 degrees per minute. how many minutes will it take to lower its temperature from 90 degrees to 50 degrees?
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A refrigerator cools a bottle of water 2 degrees per minute. how many minutes will it take to lower its temperature from 90 degrees to 50 degrees?

User Shivaraj Bhat
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It will take 20 minutes. The fridge needs to cool down by 90-50=40degrees. The fridge cools at 2 degrees per minute, i.e. 40/2=20 minutes total.
User AdrienNK
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