A type of hot tub holds 600 gallons of water one hose can fill the hot tub in 9 hours while another hose takes only 6 hours how long will it take for the hot tub to be filled if both hoses are used

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Answer:

the answer is 40.

Step-by-step explanation:

[tex]t \: = \: \frac{600}{9 + 6} = 40[/tex]