Science:Math Exam Resources/Courses/MATH103/April 2013/Question 07 (e)/Statement

Biofuel: Suppose you work at an experimental algae farm where algae is turned into biofuel. The algae grows in tanks at a rate $\displaystyle \alpha =2$ and the steady supply of nutrients allows each tank to sustain $\displaystyle K$ kilograms of algae.

In scenario (d). assuming you start with $\displaystyle M=K/4$ kilograms of algae, at what rate H do you have to harvest the algae such that the tank always contains $\displaystyle K/4$ kilograms of algae?