Question

The product of Aishwarya s age 5yrs ago and her age 10yrs is 16.find her present age

Answer 1

Answer:6 years

Step-by-step explanation:

Let her present age be x years

By question,

(x-5) (x+10)=16

Or, x^2+10x-5x-50=16

Or, x^2+5x-66=0

Or, x^2+11x-6x-66=0

Or, x(x+11)-6(x+11)=0

Or, (x+11)(x-6)=0

Therefore x=6,-11

Of the two values obtained x=-11 is not possible because age cannot be negative.

Hence x=6 years.