Question

My father's age 5 years ago plus twice my age now gives 130. What is my father's age? ​

Answer 1

let the father's age be x

father's age 5 years ago = x-5

let your present age be y

then your age 5 years ago= y-5

now according to question,

=>x-5+2y=65

=>x+2y=70-------1

next

=y-5+3x= 130

=3x+y=135-------2 ×2

subtracting 2 from 1

x+2y=. 70

6x+2y=.270

-. -. -

-------------------

-5x. =. -200

5x = 200

x=200/5

x= 40

so age of dad = x. = 40 y/o