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