Question 240423: I am 48, my brother is 42. What is the equation which models how old, in years, I will be when I am 3 times as old as my younger brother.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! I am 48, my brother is 42. What is the equation which models how old, in years, I will be when I am 3 times as old as my younger brother.
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Let the missing years be "x".
Equation:
(48+x) = 3(42+x)
48+x = 126 + 3x
2x = -78
x = -39
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Your age then: 48-39 = 9
Your brother's age then: 42-39 = 3
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Cheers,
Stan H.
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