(50/х+50)*10%-(50/х+200)*100%=7.5
50/(х + 50) - 50/(х + 200) = 0.075
x^2+250x-90000=0
D=422500
x=-450
x=200
(50/х+50)*10%-(50/х+200)*100%=7.5
50/(х + 50) - 50/(х + 200) = 0.075
x^2+250x-90000=0
D=422500
x=-450
x=200