Question 158336
x+y=500 MULTIPLY BY -.5 & ADD.
0.3x+0.5y=175
-.5X-.5Y=-250
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-.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