Refrigerator X removes of heat from its cold compartment by doing of work

PHYSICS · Subjective · A Level · Physics · Engineering physics · Engineering physics

Problem

Refrigerator X removes

1200\,\text{J}

of heat from its cold compartment by doing

400\,\text{J}

of work. Refrigerator Y removes

1500\,\text{J}

of heat by doing

600\,\text{J}

of work. Which refrigerator has the higher coefficient of performance (COP)? Show the calculated COP values.