NCERT Solution Class X Mathematics Quadratic Equations Question 4 (Ex 4.3)

Question 4:

The sum of the reciprocals of Rehman’s ages, (in years) 3 years ago and 5 years from now is 1/3. Find his present age.

Answer:

Let the present age of Rehman be x years.

Three years ago, his age was (x − 3) years.

Five years hence, his age will be (x + 5) years.

It is given that the sum of the reciprocals of Rehman’s ages 3 years ago and 5 years from now is 1/3.

However, age cannot be negative.

Therefore, Rehman’s present age is 7 years.

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