Question 880261: a man is 21 years older than his son. in six years, the man will be 5 times tha age of his son. what is age of the son now?
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! a man is 21 years older than his son. in six years, the man will be 5 times tha age of his son. what is age of the son now?
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f = s + 21
f+6 = 5*(s+6)
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Sub for f, the father's age
s + 21 + 6 = 5s + 30
s + 27 = 5s + 30
4s = -3
s = -3/4 (son's age)
= -9 months
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His son is not yet born, but might be a zygote.
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