how can u solve 3 variables using 2 equations?

On Tue, Sep 14, 2010 at 3:44 PM, Yan Wang <wangyanadam1...@gmail.com> wrote:

> x/72 + y/64 + z/56 = 4
> &
> x/56 + y/64 + z/72 = 4+2/3
>
> find a solution to this ...
>
> On Tue, Sep 14, 2010 at 2:31 AM, bittu <shashank7andr...@gmail.com> wrote:
> > Amazon Interview Question for Software Engineer / Developers
> >
> >
> > A car has speed of 72 64 56 in downhill, plain and uphill
> > respectively . A guy travels in the car from Pt. A to pt. B in 4 Hrs
> > and pt. B to pt. A in 4 Hrs and 40 min. what is the distance between A
> > and B?
> >
> > Regards
> > Shashank
> >
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