Math

posted by .

The sum of John's age and twice of his son's age is 56. In 8 years time, the son's age will be half of john's age. Find there present ages.

Right now I wrote down an equation x+2y=56 and not quite sure what to do next.

  • Math -

    OK. That's the first sentence covered in x+2y=56 .

    In 8 years time, the son's age will be half of john's age.

    If x is John's age now, then his age in 8 years is (x+8), and his son's will be (y+8).

    So the next thing is to make a second equation from that sentence, using (x+8) and (y+8) for the ages.

  • Math -

    x=20 and y=18

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    John's present age is five years more than thrice the present age of his son. Five Years hence, John's age will be fifteen years more than twice the age of his son at that time. Find the present age of John and his son. J=3*S +5 J+5=15+2*(S+5) …
  2. Math

    Loretta's age now is twice John's age five years ago. In three years the sum of John's and Loretta's ages will be 50. How old are Loretta and John today?
  3. math

    How old are they? I found this question online. Please help me understand where I may have made a mistake. Thanking you in advance. My question: Norman is now 4 times the age of her son, 3 years ago, the sum of their ages was 49. How
  4. math - age problem

    3 years ago, Vin’s age is 3 times the age of Paul. At the present, Vin’s age is twice the age of Paul. What would be their age 3 years from now if the sum of their present age is 18?
  5. Math

    At present, the sum of the ages of a father and his son is 33 years. Determine the smallest number of years until the father's age is 4 times the son's age.
  6. math

    Mary is 3 times as old as her son.In 12 years,Mary's age will be one less than twice her son's age.Find their ages now.
  7. math

    Five years ago mother's age was square of her son. 10 years hence her age will be twice of her son's age. Find mother's age.
  8. MATH

    Solve each questions by age equation problem: 1. Jonathan is 3 years older than Alvin. In 7 years, Alvin's age will be 6/7 of Jonathan's age. How old are they now?
  9. problems on age

    1. The sum of ages of father and son is 64 years. Father says to son, “I am 5 times as old as you were when I was of your age.” What is the sum of digits of son’s age?
  10. math

    John's age is seventeen years less than twice Isabella's age. Together, the sum of their ages is 40. How old is John?

More Similar Questions