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Let Adam’s age = x Peter’s age = (x-7) 20 years hence, Adam’s age = (x+ 20) years 5 years ago, Peter’s age = x-7- 5 = (x- 12) years Now, (x+20) = 3 (x-12) x+ 20= 3x - 36 2x = 56 x= 56/2 = 28 years Hence, Adam = 28 years Peter = 28 - 7 = 21 years Sum of the present ages of Adam and Peter = 28 + 21 = 49 years
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