SOLUTION: eric's grandfather is 57 years older than he is. Five years from now, his grandfather will be four times as old as Eric is at that time. How old is the grandfather?

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Question 212332This question is from textbook college algebra
: eric's grandfather is 57 years older than he is. Five years from now, his grandfather will be four times as old as Eric is at that time. How old is the grandfather? This question is from textbook college algebra

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
eric's grandfather is 57 years older than he is. Five years from now, his grandfather will be four times as old as Eric is at that time. How old is the grandfather?
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Let eric's age now be "e".
Grandfather's age is now "e+57"
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Four years from now:
e+57+5 = 4(e+5)
e + 62 = 4e + 20
3e = 42
e = 14 yrs (eric's age now)
e+57 = 71 (grandrather's age now)
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Cheers,
Stan H.