Neco 2020 Agricultural Science Question 23
Practice objective / multiple choice question 23 from the 2020 Neco Agricultural Science examination.
A grain storage bin initially contains \(10{,}000\\ \text{kg}\) of maize with a moisture content of \(14\%\) (wet basis). The target moisture content is \(12\%\). The drying system removes moisture at a rate proportional to the difference between the current moisture content and the ambient moisture content of \(8\%\), with a proportionality constant of \(0.05\\ \text{day}^{-1}\). Assuming the moisture content follows the model \(M(t)=M_a+(M_0-M_a)e^{-kt}\), calculate the number of days required to reach the target moisture content. Give your answer to one decimal place.
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About This Question
This is Neco 2020 Agricultural Science Question 23. It is one of the objective questions from the 2020 Neco Agricultural Science examination.
Difficulty level: Hard .
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