Mr Kadhila has formulated a linear programming model for two products, X and Y. The objective function is depicted by the formula C = 5x + 6y, where c = contribution, X = the number of product X to be produced and Y = the number of product Y to be produced. Each unit of X uses 2 kg of material A and each unit of Y uses 3 kg of material A. The standard cost of material A is N$2 per kg. The shadow price for material A has been worked out and found to be N$2.80 per kg. Required: If an extra 65 kg of material A becomes available at N$2 per kg, what will the maximum increase in contribution be? NB: You are not required to enter the unit or currency symbol. Enter a numerical answer with no space. For example: 1000