(67500+30000x)+(67500+30000x)y=106875
find x and y
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67500+30000x+67500y+30000xy=106875
30000x+67500y+30000xy=106875-67500
30000x+30000xy+67500y=39375
Let x=0 then
67500y = 39375
Y = 39375/67500
Y = 0.58
Substitute y in above
30000x ( 1+y ) +39150=39375
47400x = 225
X = 225/47400
X = 0.0047
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