How can you be efficient?

In an efficient market, information is impounded into security prices with such speed that there are no opportunities for investors to profit from publicly available information. Actually, what types...

The definition of efficient is the following: 1. To Deliver a successful outcome and meets objectives as fully as possible.

Being effective without wasting time or effort or expense. Able to accomplish a purpose; functioning effectively by producing or capable of producing an intended result or having a striking effect.

just about 30%

They create heat inside the object being cooked, instead of wasting it outside.