Answers

2016-07-18T12:35:42+08:00
X=Pesos/kilo;(price)
y=kilo; (qty)
x(y)=540;
x=540/y..............1.)
arrangement:
when x-2 and y+3;
(x-2)(y+3)=540;
xy-2y+3x-6=540;
xy=540:
-2y+3x-6=540-540;
-2y+3(540/y)-6=0
-2y^2+1620-6y=0;
y^2+3y-810=0;
by quadratic formula;
y=27kilos...ans;
@1;
x=540/27;
x=P20/kilo..ans;
if you wish to check just plug in the x and y values, in equation 1 @2..ty

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