After 12 years I shall be 3 times as old as I was 4 years ago. find my present age.
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21
let present age = x
According to the question,
x +12 = 3[x - 4]
x + 12 = 3x - 12
24 = 2x
∴ x = 12
According to the question,
x +12 = 3[x - 4]
x + 12 = 3x - 12
24 = 2x
∴ x = 12
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