Answer:
18.43%
Explanation:
The overall efficiency of a process is determined by the product of every individual step's efficiency. In this case, the steps are: Crude production (94%), Refining (86%), Transportation (97%), and Engine efficiency (23.5%).
The total efficiency is:
[tex]E=0.94*0.86*0.97*0.235\\E=0.1843=18.43\%[/tex]
Total efficiency of the process is 18.43%
