/ A manufacturer produces three products: A, B and C. The profits for each unit of A, B and C sold are R1, R2 and R3 respectively. Fixed costs are R17 000 per year, and the running costs per unit are R4, R5 and R7 per A, B and C respectively. Next year a total of 11 000 units of is to be produced and sold, and a total profit of R25 000 is to be realised. If total cost is to be R80 000. How many units of A, B and C should be produced next year?

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