With 85% in IPE and 40 marks in AP EAMCET, your rank would likely fall between 75,000 and 1,00,000, depending on your category and competition. The EAMCET weightage is 75%, and IPE contributes 25%. Since 40 marks are relatively low, the IPE percentage helps slightly, but the rank will still be on the higher side. Your precise rank depends on the overall performance of other candidates that year.