I would like this problem to be solved via Differential Equations. Thank you! Suppose you cool a pot of soup in a 75 °F room. Right when you take the soup off the stove, you measure its temperature to be 220 °F. Suppose after 20 minutes, the soup has cooled to 170 °F. Suppose you can eat the soup when it is 130 °F. How long will it take to cool to this temperature?

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