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# Hello

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Intern
Joined: 01 Oct 2013
Posts: 1

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01 Oct 2013, 17:03
Dear guys ,
it's the first time to be here , I'm starting studying for GMAT , and found one question in rates problems , and i need ur help.the question is:-
we have one tank, containing 7200Liter of water, valve A is feeding the tank by water in 100 lit/min, valve B is draining the tank by 300 lit/min, 70 lit/min of them is returning back to the tank...how long it will take to empty the tank?

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Founder
Joined: 04 Dec 2002
Posts: 15864

Kudos [?]: 29066 [0], given: 5262

Location: United States (WA)
GMAT 1: 750 Q49 V42

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01 Oct 2013, 17:05
Welcome!
Please review the GMAT Club posting rules and please make sure you post in the proper forum with the proper subject. Your question looks like it is most suited for the PS Forum. That's here: gmat-problem-solving-ps-140/

Thank you,
BB
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Kudos [?]: 29066 [0], given: 5262

Re: Hello   [#permalink] 01 Oct 2013, 17:05
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