Posted by **Jonathan** on Saturday, October 31, 2009 at 10:48pm.

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 -
**jim**, Saturday, October 31, 2009 at 10:52pm
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 -
**harpreet kaur**, Friday, January 25, 2013 at 11:36pm
x=20 and y=18

## Answer This Question

## Related Questions

- Math - John's present age is five years more than thrice the present age of his ...
- Math - Loretta's age now is twice John's age five years ago. In three years the ...
- math - John's age is seventeen years less than twice Isabella's age. Together, ...
- math - Mary is 3 times as old as her son.In 12 years,Mary's age will be one less...
- problems on age - 1. The sum of ages of father and son is 64 years. Father says ...
- math - age problem - 3 years ago, Vin’s age is 3 times the age of Paul. At the ...
- math - Five years ago mother's age was square of her son. 10 years hence her age...
- math - How old are they? I found this question online. Please help me understand...
- Math - Sheila's age is two years more than twice Nicole's age. The sum of their ...
- Math - At present, the sum of the ages of a father and his son is 33 years. ...

More Related Questions