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20 February, 15:13

Joanne's age is two times Devin's age and Devin is eight years older than Christina. If the sum of their ages is 76, what is Christina's age? Joanne's age? Devin's age?

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  1. 20 February, 15:40
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    Answer: Christina's age is 13, Joanne's age is 42 and Devin's age is 21.

    Step-by-step explanation: If Devin's age is represented by d, then Joanne's age will be 2d because Joanne is two times Devin's age. Also, if Devin is 8 years older than Christina, then Christina's age would be d - 8. If the sum of their ages is equal to 76, then;

    2d + d + (d - 8) = 76

    2d + d + d - 8 = 76

    4d - 8 = 76

    Add 8 to both sides of the equation

    4d = 84

    Divide both sides of the equation by 4

    d = 21

    Therefore, Devin is 21 years old

    Joanne is 42 years old and

    Christina is 13 years old.
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