Question
Present age of 'X' is two times more than the age of
'Y'. If four years ago, their ages were in ratio 4:1, respectively, then find the present age of 'X'.Solution
Let the present age of Y be 'x' years. So, present age of 'X' = x * 3 = '3x' years ATQ; {(3x - 4)/(x - 4)} = (4/1) Or, 3x - 4 = 4 * (x - 4) Or, 3x - 4 = 4x - 16 Or, 12 = x So, x = 12 So, present age of 'X' = 3 * 12 = 36 years
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