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algebra

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Kim is 9 years older than her siater. kim is one more than 3 times her sisters age. How old is kim?

  • algebra -

    Let siate age = x

    And Kim aged = x + 9

    Since kim age is one more than 3 times siate age

    Therefore:

    x + 9 = 1 + 3x

    9 - 1 = 3x - x

    8 = 2x

    x = 4 (Siate age)

    Kim age is 1 more than 3 times Siate age:

    1 + 3x = 13 Kim age.

  • algebra -

    Who goes on here to do math for fun?

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