Rebounding from its record low of 74.50, the rupee traded higher by 48 paise at 73.80 against the US currency on Friday after the Reserve Bank's assurance that steps will be taken to maintain sufficient liquidity in the panick-stricken currency market.  At the interbank foreign exchange, the rupee opened lower at 74.39 and slid further to the day's low of 74.50 against the US dollar as investors panicked weighing turmoil in financial markets due to coronavirus fears.