Q4. The sum of the reciprocals of Rehman’s ages, (in years) 3 years ago and 5 years from now is . Find his present age.
Let the present age of Rehman be years.
Then, 3 years ago, his age was years.
and 5 years later, his age will be years.
Then according to the question we have,
SImplifying it to get the quadratic equation:
Hence the roots are:
However, age cannot be negative
Therefore, Rehman is 7 years old in present.
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