Science:Math Exam Resources/Courses/MATH102/December 2012/Question C 04 (a)

MATH102 December 2012
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Question C 04 (a)

Dead leaves accumulate on the ground in a forest at a rate of 5 grams per square centimeter per year. At the same time, these leaves decompose at a continuous rate of 50 percent per year.

(a) Write a differential equation for the total mass Q(t) of dead leaves (per square centimeter) at time t.

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