Question

The sum of the reciprocals of rehaman's ages 3years ago and 5 years from now is 1/3 find his present age

Answer 1

Answer:

7 yrs

Step-by-step explanation:

Let rehmans age=x

three years ago= x-3

after 5years= x+5

A/Q

1/x-3+1/x+5=1/3

= x+5+x-3/x^2+2x-15=1/3

by cross multiplying

=3(2x+2)= x^2+2x-15

= 6x+6= x^2+2x-15

= 0=x^2-4x-21

by middle term splitting

x^2-7x+3x-21

x(x-7)+3(x-7)

(x+3)(x-7)

x=-3,7

Age can't be in negative hence the answer is 7

Pls mark it as brainliest answer