The Sri Lankan rupee ended slightly firmer on Friday in dull trade as banks' dollar selling on remittance inflows surpassed the importer greenback demand, dealers said. The rupee ended at 155.15/20 per dollar, compared with Thursday's close of 155.25/30. The rupee hit a record low of 155.90 last week. "Today there was importer demand, but that was negated by the remittance inflow," a dealer said.