Answer: The water level before the cleaners took out any water is greater than 31 feet.
Step-by-step explanation:
Let the water level before the cleaners took out any water be 'x'.
Since we have given that
The water aquarium shark tank is always greater than 25 feet of the water level decreased by 6 feet during cleaning.
So, According to question, it becomes,
[tex]x-6>25\\\\x>25+6\\\\x>31\ feet[/tex]
Hence, the water level before the cleaners took out any water is greater than 31 feet.
