Is this question right or some information is missing in it ?

In 5 years time father will be 3 times as old as his son. four years ago father was 6 times as old as his son.

Find their present age ?

Can anyone help me solve it if its correct

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- Dec 11th 2011, 07:05 AMhaftakhanage related question
Is this question right or some information is missing in it ?

In 5 years time father will be 3 times as old as his son. four years ago father was 6 times as old as his son.

Find their present age ?

Can anyone help me solve it if its correct - Dec 11th 2011, 07:25 AMskeeterRe: age related question
- Dec 11th 2011, 07:26 AMe^(i*pi)Re: age related question
With these problems it's always good to write down what you know using variables. Let the father's age now be $\displaystyle x$ and the son's age now be $\displaystyle y$.

Now we can write a number of equations based on what we're told:

*In 5 years time father will be 3 times as old as his son*: $\displaystyle x+5 = 3(y+5)$

*four years ago father was 6 times as old as his son*: $\displaystyle x-4 = 6(y-4)$

You now have a pair of simultaneous equations in x and y so you can solve it. In this case it would be easier to use elimination by taking the second equation from the first