IRB Infrastructure's (IRB) topline de-grew 13.0% YoY to | 1122.7 crore (our estimate: | 1336.7 crore) due to sharp drop in toll revenues as seven BOT assets were transferred to InVIT EBITDA margins declined sharply by 395 bps YoY to 51.0% (our estimate: 47.0%) due to higher proportion of revenues from low margin construction division (66.8% in Q2FY18 vs 56.5% in Q2FY17) PAT grew robustly by 65.0% YoY to | 234.7 crore (our estimate: | 195.8 crore) due to higher other income (| 146.5 crore in Q2FY18...