Neco Model Questions Vol1 2018 Agricultural Science Question 43

A farmer harvests \(10 000\) kg of cassava roots with an initial moisture content of \(65\)% (wet basis). The roots must be dried to \(20\)% moisture for safe storage. Drying reduces the moisture content by \(5\) percentage points per day and costs ₦500 per day. After drying, the product is stored for \(3\) months, during which insect infestation causes a \(2\)% loss of weight each month. The market price of dried cassava is ₦120 kg⁻¹ and the processing cost is ₦30 kg⁻¹ of dried product. Calculate (a) the number of drying days required, (b) the total drying cost, (c) the weight of cassava after drying and after storage, (d) the net loss percentage relative to the original fresh weight, and (e) the net profit from the stored product.