a father's age is three time thatof his son after fifteen year's he will be twice as great how old are they
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let father's age be x and son's age be y
x=3y
x+15=2(y+15)
3y+15=2y+30
y=15 years
x=3×15=45 years
x=3y
x+15=2(y+15)
3y+15=2y+30
y=15 years
x=3×15=45 years
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