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algebra

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1. A professor has RM 15000 to invest for one year, some are 8% and the rest are at 7% annual interest. If she will earn RM 1100 from these investments, how much did she invest at each rate? (4 marks)

  • algebra - ,

    x+y = 15000
    .08x + .07y = 1100

    Now just solve for x at 8% and y at 7%

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