Answer :
Yep I think so as well:
you need 4+4+2=10 hours corresponding to 1000+1000+500=2500 gallons
you need 4+4+2=10 hours corresponding to 1000+1000+500=2500 gallons
Answer: 10h.
Step-by-step explanation: Did the test got 100%. Here's some proof guys~!
Good luck on the test^^