Question of the Day 16-01-2021

Question of the Day
GATE 2016   ME   Question No. 155

A reversible cycle receives 40 kJ of heat from one heat source at a temperature of $127\;{}^\circ\mathrm C$ and 37 kJ from another heat source at $97\;{}^\circ\mathrm C$ . The heat rejected (in kJ) to the heat sink at $47\;{}^\circ\mathrm C$  is __________