SOLUTION: A milk tank can be filled by pip A in 6 hours, by pipe B in 8 hours and by pipe C in 12 hours. how long will it take all three pipes working together to fill the tank?
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Question 448309: A milk tank can be filled by pip A in 6 hours, by pipe B in 8 hours and by pipe C in 12 hours. how long will it take all three pipes working together to fill the tank? Found 3 solutions by mananth, ikleyn, greenestamps:Answer by mananth(16949) (Show Source):
You can put this solution on YOUR website! Filling the tank 1 job
Pipe I 6 hours
It does 1/ 6 jobs in 1 minute
Pipe II 8 hours
It does 1/ 8 of thejob in 1 minute
Pipe III 12 hours
It does 1/9 of the job in 1 minute
Together they will do 1/ 6+ 1/ 8++1/12
Together they will do 7/24of the job in one hour
So they will take 3 3/7 hours
You can put this solution on YOUR website! .
A milk tank can be filled by pipe A in 6 hours, by pipe B in 8 hours and by pipe C in 12 hours.
how long will it take all three pipes working together to fill the tank?
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Calculations in the post by @mananth are inaccurate; his solution and his answer are incorrect.
I came to bring a correct/accurate solution in the form as it SHOULD be presented.
First pipe makes 1/6 of the job per hour.
Second pipe makes 1/8 of the job per hour.
Third pipe makes 1/12 of the job per hour.
Working together, the three pipes make
+ + = + + = = =
of the job per hour.
Hence, it will take hours, or 2 hours, or 2 hours and 40 minutes to fill the tank,
if all three pipes work together.
Solved.
/\/\/\/\/\/\/\/
And my separate notice in the margins of my solution
I do not think that somebody will fill a milk tank during 12 hours.
