Question

10) The product of Sneha's age
5 years ago and 4 years hence
is 360. Her present age is *​

Answer 1

Step-by-step explanation:

Let sneha's present age be x years old.

=> Sneha's age 5 years ago = x - 5

=> Sneha's age 4 years hence = x + 4

The product of Sneha'a age 5 years ago and 4 years hence is 360.

=> (x - 5) (x + 4) = 360

=> x² + 4x - 5x - 20 = 360

=> x²- x - 20 = 360

=> x² - x - 20 - 360 = 0

=> x² - x - 380 = 0

=> x² - 20x + 19x - 380 = 0

By factorixation method,

=> x(x - 20) + 19(x - 20) = 0

=> (x - 20) (x + 19)

=> x = 20 or -19

Since age cannot be in negative, x = 20

Sneha's present age is 20 years.

Hope it helps!

Answer 2

Step-by-step explanation:

plz mark as branliest answer.