Question 212332
 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.