SOLUTION: {{{x+y=500}}}{{{ 0.3x + 0.5y = 175}}

Algebra ->  Linear-equations -> SOLUTION: {{{x+y=500}}}{{{ 0.3x + 0.5y = 175}}      Log On


   

Question 158336: x%2By=500 0.3x + 0.5y = 175}}
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=500 MULTIPLY BY -.5 & ADD.
0.3x+0.5y=175
-.5X-.5Y=-250
-------------------------
-.2X=-75
X=-75/-.2
X=375 ANSWER.
375+Y=500
Y=500-375
Y=125 ANSWER.
PROOF;
.3*375+.5*125=175
112.5+62.5=175
175=175