900-100P=-150+50P
1050=150P
Pe=7
Qe=900-700=200
dQ=(900-100*6)-(900-100*8)=300-100=200
dP=8-6=2
E=200*(6+8)/2*(300+100)=2800/800=3,5
900-100P=-150+50P
1050=150P
Pe=7
Qe=900-700=200
dQ=(900-100*6)-(900-100*8)=300-100=200
dP=8-6=2
E=200*(6+8)/2*(300+100)=2800/800=3,5