the age of a person is twice the sum of the ages of his 2 sons,. and five years ago his age was thrice the sum of their ages, find

1 thought on “the age of a person is twice the sum of the ages of his 2 sons,. and five years ago his age was thrice the sum of their ages, find”

1. Answer:

   Let the present age of person be x and the sum of the age of his 2 son be y

   According to the question the present age

   x=2y. …(1)

   and the age 5 year ago

   (x-5)=3(y-5)

   i.e. x-5=3y-15

   i.e. x-3y = -10.

   Putting the value of x from (1) , we get

   2y-3y=-10

   i.e.-y=-10

   i.e y = 10

   Putting this value of y in (1), We get

   x=2(10)=20

   Therefore the present age of person is 20 years and sum of the ages of his sons his 10

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