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Calculus Final - Part 2 of 2
SAMPLE
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13. Intro to Differential Equations / Separable Differential Equations / Problem 12
Problem 12

A cup of tea is initially at a temperature of 85∘C 85^{\circ}\text{C} and cools in a room maintained at 20∘C 20^{\circ}\text{C} . If the cooling constant is k=0.03 k = 0.03 min−1\text{min}^{-1}, after how many minutes will the tea reach 40∘C 40^{\circ}\text{C} ? Round your answer to the nearest whole number.