The efficiency of this pumped storage power station will be "90%".
The given values are:
Total Input power,
Output power,
As we know the formula,
→ [tex]Efficiency = \frac{O}{I}\times 100[/tex]
By substituting the values, we get
→ [tex]= \frac{540}{600}\times 100[/tex]
→ [tex]= \frac{540}{6}[/tex]
→ [tex]= 90[/tex] (%)
Thus the above answer is appropriate.
Learn more about efficiency here:
https://brainly.com/question/14313112