Question

the product of kavya age in years five years ago and her age in years eight years hence is 30 find the present age of Kavya​

Answer 1

Answer:

The present age of Kavya = 7 years

Step-by-step explanation:

Let the present age of Kavya be ' x '

According to the question,

(x - 5) (x + 8) = 30

x² + 3x - 40 = 30

x² + 3x - 70 = 0

x² + 10x -7x - 70 = 0

x (x + 10) - 7 (x + 10)

(x + 10) (x - 7) = 0

x = -10 or 7

since age cannot be negative therefore x = 7