Neco 2021 Geography Question 36

Two potential sites, X and Y, are being evaluated for a new regional market. Their suitability index \(S\) is calculated using the formula \(S = 0.3\\left(\\frac{P}{10,000}\\right) + 0.25\\left(\\frac{1}{d+1}\\right) + 0.25(1 - f) + 0.2\\left(\\frac{C_{\\max} - C}{C_{\\max}}\\right)\), where \(P\) is population, \(d\) is distance to the main road (km), \(f\) is flood‑risk expressed as a decimal, \(C\) is land cost per hectare (₦), and \(C_{\\max}=300,000\) ₦. Site X has \(P=12,000\), \(d=8\) km, \(f=0.15\) and \(C=250,000\) ₦, giving a reported index of 0.63 (to two decimal places). Site Y has \(P=9,000\), \(d=5\) km, \(f=0.08\) and an unknown land cost \(C\). If the reported suitability index for Site Y is 0.70, what is the land cost \(C\) (in ₦) for Site Y?