Answer:
efficiency of the engine is 0.4167
Explanation:
given data
T high = 1200 K
T low = 700 K
solution
we get here efficiency that is express as
efficiency  = [tex]1 - \frac{T\ low}{T \ high }[/tex]   .........................1
put here value of both temperature we get efficiency Â
efficiency  = 1 - [tex]\frac{700}{1200}[/tex]
efficiency  = 1 - 0.58333
efficiency  = 0.4167
so efficiency of the engine is 0.4167