One of the most efficient engine even developed operates between 1800 K and 600 K, Its actual efficiency is 40%. What percentage of its maximum possible efficiency is this?

One of the most efficient engine even developed operates between 1800

1.	One of the most efficient engine even developed operates between 1800 K and 600 K, Its actual efficiency is 40%. What percentage of its maximum possible efficiency is this?
Answer» Solution :`eta = 1800 - 600 //1800 = 0.666%` fraction `= (40//66.6) XX 100 = 60.06%`