Question 831857: A man is nine times as old as his son. In nine years, he will be three times as old as his son. How old are each of them now? Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! ---
x = 9y
x + 9 = 3(y + 9)
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put the system of linear equations into standard form:
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x = 9y
x + 9 = 3y + 27
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x - 9y = 0
x - 3y = 18
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solution:
x = man = 27
y = son = 3
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