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A cup of coffee cools from 90∘C to 80∘C in t mins, when the room temperature is 20∘C. The time taken by a similar cup of coffee to cool from 80∘C to 60∘C at a room temperature same at 20∘C. |
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Answer» A cup of coffee cools from 90∘C to 80∘C in t mins, when the room temperature is 20∘C. The time taken by a similar cup of coffee to cool from 80∘C to 60∘C at a room temperature same at 20∘C. |
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