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3 years ago

Can someone help? Thanks! It will be explained in the picture :)

Mathematics

2 answers:

alex41 [277]3 years ago

7 0

Answer:

I think you multiply 4 by 5 ft

Semmy [17]3 years ago

3 0

I think you would have to multiple four by five. If you go all the way around I think it would be 223.2.
I say that because you do four times five then you have to do it all the way around and get that.

I don’t know if that is right though. SORRY!

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Answer:

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3 years ago

the intake pipe can fill a certain tank in 6 hours when the outlet pipe is closed, but with the outlet pipe open it takes 9 hour

Leona [35]

The outlet pipe will take 18 hours to empty the tank.

St<u>ep-by-step explanation:</u>

Number of hours taken by inlet pipe to fill the tank=6

work done by the inlet pipe in 1 hour=1/6

Number of hours taken by the inlet pipe to fill the tank with the outlet pipe open=9

work done by the inlet pipe in 1 hour with outlet pipe open=1/9

we have to determine the time taken by the outlet pipe to empty the tank

The inlet and outlet pipe does the opposite work.

$\\time\ taken\ by\ the\ outlet\ pipe\ to\ empty\ the\ tank=x\\work\ done\ by\ the\ outlet\ pipe\ in\ 1\ hour=1/x\\(1/6-1/x)9=1\\1/6-1/x=1/9\\1/x=1/6-1/9=3/54\\x=54/3=18$

The outlet pipe takes 18 hours to empty the tank.

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