From: "Matthias Wächter" <matthias@...>
Date: 2008-02-26T18:05:18+09:00
Subject: Re: Math problem

ycsunil schrieb:
> On Feb 26, 1:28 pm, grandmabec...@msn.com wrote:
>> I am try to help my daughter:
>> Problem
>>
>> father is 4 times older then his daughter.
>> in 6 years he will be 3 times older what is the answer and how did you
>> reach it.
>> Thanks, a mom in CA
> 
> This is not the right forum to ask..anyway I can answer this question
> 
> Father is 4 times older then his daugher. so the first equation will
> be:
> 
> Equation 1: Father = 4 * Daughter
> 
> In 6 years he will be 3 times older. so the second equation will be:
> 
> Equation 2: (Father + 6) = 3 * (Daughter + 6)

Depends on how you interpret "4 times older". What if it'd say "the brother is one time older than the sister"? Are they equal in age, a.k.a. twins, or would you suggest he is twice as old?

In case of the latter, we'd have to interpret the whole problem differently.

Equation 1: Father = Daughter + 4*Daughter

Equation 2: Father+6 = Daughter+6 + 3*(Daughter+6)

=> Father = 5*Daughter,
5*Daughter+6=Daughter+6+3*Daughter+18
=> Daughter = 18
=> Father = 90

Well ... be Father with 72 ... Charlie Chaplin then?

:)

- Matthias