If a single stage amplifier is having an open loop voltage gain of 80, input resistance of 800 -ohm and output resistance of 200 -ohm, what will be the available signal voltage across a 50 -ohm load connected at the output of a cascaded amplifier made out of two such single stage amplifiers that is driven by a signal source having a source resistance of 600 -ohm and an open circuit signal voltage of 15 mV