Qu: If a pounds of sugar and b pounds of coffee together cost c cents, while d pounds of sugar and e ppunds of coffee together cost f cents. what is the price of one pound of each?
I am trying to use simultaneous equations to do it but i cannot find a way to do it.
$ a + b = c$
$ d + e = f$
the problem is that if i do this:
$ae + be = ce$
$db + be = fb$
I can only eliminate be but i am stuck with this:
$ae - db = ce - bf$
is there something i am not seeing.