Gce Model Questions Vol1 2020 Geography Question 12
Practice objective / multiple choice question 12 from the 2020 Gce Model Questions Vol1 Geography examination.
A farmer applies nitrogen fertilizer \(N\) (kg ha⁻¹). When annual rainfall is adequate (≥500 mm) the crop yield (ton ha⁻¹) follows \(Y = 2 + 0.05N\). In a dry year (350 mm) the yield falls to 80% of the amount given by the same formula. The probability of an adequate‑rainfall year is 0.6, independent each year. The farmer can afford at most 200 kg ha⁻¹ of nitrogen. Profit per hectare is revenue minus fertilizer cost, where revenue = £200 × expected yield and fertilizer cost = £0.5 × N. Determine the integer value of \(N\) (kg ha⁻¹) that maximises expected profit over a 5‑year period.
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About This Question
This is Gce Model Questions Vol1 2020 Geography Question 12. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Geography examination.
Difficulty level: Hard .
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