Vacent seat in all non AC on Wednesday ⇒(900−830)=70,(900−790)=110 and Vacent seat in all non AC on Thursday =(500−390)=110,(500−480)=20 Total =70+110+110+20=310 Vacent seat in all AC class on Monday, Tuesday and Friday. =(500−480)=20,(500−450)=50, (500−500)=0 and, (250−240)=10 (250−230)=20 (250−210)=40, and (150−145)=5, (150−120)=30, (150−130)=20 Total =20+50+0+10+20+40+5+30+20=195 ∴ Required ratio =310:195=62:39