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13: Intro to Differential Equations
Basics of Differential Equations
13: Intro to Differential Equations

Basics of Differential Equations: Videos & Practice Problems

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Problem 26Multiple Choice

A glass of hot tea is taken out of the kettle at a temperature of 90°C90\(\degree\]\text{C}\) and left to cool in a room where the temperature is 20°C20\(\degree\]\text{C}\). After 1010 minutes, the tea has cooled to 70°C70\(\degree\]\text{C}\). At what time (after being taken out of the kettle) will the tea cool to 50°C50\(\degree\]\text{C}\)? Round your answer to the nearest minute.