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    tim deans's Avatar
    tim deans Posts: 1, Reputation: 1
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    #1

    Mar 25, 2007, 02:39 AM
    algerbra equations
    hi can somebody please help my young son with a question for his home work

    1 man is now three times as old as his daughter write a formula with two variables to show this

    2 in 10years time the sum of there ages will be 76 write a second formula to show this using the same two variables.

    substitute the formula from a into the formula b find the daughters age now

    your assistance would be a great help thanks tim:)
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Mar 25, 2007, 03:06 AM
    The man's age is 3 times the daughter's age: m = 3d
    In 10 years time, their ages will add to 76: m+d+20 = 76

    Now hopefully your son will know how to substitute :)
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