posted by .

A half of what John's age was 4 years ago is equal to one third of what it will be in 5 years' time. How old is John now? Explain your workings

  • Mathematics -

    Let John's present age be x
    Four years ago John was x-4
    Half of John's age 4 years ago = (x-4)/2

    John's age in 5 years from now = x+5
    a third of his age 5 from now = (x+5)/3

    (x-4)/2 = (x+5)/3
    3x - 12 = 2x + 10
    x = 22

    So John is now 22 years old

    4 years ago he would have been 18
    5 years from now he will be 27
    is half of 18 equal to a third of 27 ? YES

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Mathematics

    Mary's age is 2/3 that of Peter's. Two years ago Mary's age was 1/2 of what Peter's age will be in 5 years time. How old is Peter now?
  2. math

    A. Brad is 12 years older than Sam . If Brad were 8 years older than he is now. he would be twice as old as Sam. How old is Sam now?
  3. math

    A. A woman was 30 years old when her daughter was born.Her age is now 6 years more than three times her daughter's age. How old will the daughter be in 5 years?
  4. math

    A. John is now 10 years older than Marcus. Three times John's age 5 years from now will be the same as five times Marcus's age 5 years ago. How old is John now?
  5. math

    1. Lisa is 15 years old and her father is 40. How many years ago was the father six times as old as Lisa?
  6. 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?
  7. math

    one half of what john's age was 4 years ago is equal to on of thrid of what it will be in 5 years time.How old is john now
  8. maths

    the ratio of john's age to Mike's age is 7:4. In 10 years time Mike will be as old as John was 5 years ago. How old is John now?
  9. math

    one half of jeans age two years from now plus one third of her age three years ago is twenty years. how old is she now?
  10. math

    john's age in the next ten years will four times his age five years ago. How old is john now?

More Similar Questions