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Wilfred has three investment portfolios A B and C and they are worth a total of $175 000, Portfolio A and B together valued $143

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Wilfred has three investment portfolios A B and C and they are worth a total of $175 000, Portfolio A and B together valued $143 000 and Portfolio A and C together is valued at $139 000 Required: Use Cramer's rule to find how much each is valued individually. (16 marks) B Given that the matrix A = find the determinant of A (4 marks)

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