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Math Help - Simple algebra

  1. #1
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    Simple algebra

    I can't seem to figure this one out. It looks simple but I don't know how to start it. Any help will be appreciated.

    If 3 times Jane's age, in years, is equal to 8 times Beth's age, in years, and the difference between their ages is 15 years, how old are Jane and Beth?
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  2. #2
    Senior Member Stroodle's Avatar
    Joined
    Jun 2009
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    3J=8B from this you can see that Jane is older than Beth, so J-B=15.

    Now you just need to solve these equations simultaneously for their ages. Do you know how to do this?
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