Question
At present, Peter is Seven years younger than Adam.
Adam’s age twenty years hence will be equal to thrice that of peter Five years ago. What will be the sum of their present age?Solution
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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