Answer:
79289619
Step-by-step explanation:
It's easy if you do it on paper.
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➷The answer is 18 hours.
Explanation: If you look carefully, you can see that the answer is the second condition as well. If one pipe did half, then the other pipe took over and that took 18 hours, that means that it equals one pipe filling the pool continuously by itself. :)
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➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
DOGE
The answer to this problem would be 6992.