Question

After 15 year,sheelas age will becomes four times that of her present age.find her present age?

Answer 1

let present age=x
after 15 years= x+15
x+15=4x
3x=15
x=5years is answer

Answer 2

let present age be x.
After 15 years:
age of sheela=x+15
ATQ
x+15=4x
x-4x=-15
-3x=-15
x=5
her present age is 5 years