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# Hoses P and T simultaneously fill an empty swimming pool that has a ca

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Math Expert
Joined: 02 Sep 2009
Posts: 58445
Hoses P and T simultaneously fill an empty swimming pool that has a ca  [#permalink]

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17 Mar 2017, 03:03
00:00

Difficulty:

5% (low)

Question Stats:

91% (00:48) correct 9% (01:16) wrong based on 75 sessions

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Hoses P and T simultaneously fill an empty swimming pool that has a capacity of 45,000 liters. If the flow in each hose is independent of the flow in the other hose, how many hours will it take to fill the pool?

(1) Hose P alone would take 28 hours to fill the pool.
(2) Hose T was turned on an hour later than hose P.

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Joined: 05 Mar 2015
Posts: 1000
Re: Hoses P and T simultaneously fill an empty swimming pool that has a ca  [#permalink]

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17 Mar 2017, 07:59
Bunuel wrote:
Hoses P and T simultaneously fill an empty swimming pool that has a capacity of 45,000 liters. If the flow in each hose is independent of the flow in the other hose, how many hours will it take to fill the pool?

(1) Hose P alone would take 28 hours to fill the pool.
(2) Hose T was turned on an hour later than hose P.

no info about rate of T
hence combined also insuff

Ans E
Manager
Joined: 06 Dec 2016
Posts: 231
Re: Hoses P and T simultaneously fill an empty swimming pool that has a ca  [#permalink]

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17 Mar 2017, 09:16
1) You have no information on Hose T so 1 is insufficient
2) You have no information on Hose T or P so insufficient

Combine 1 &2, still insufficient.

Intern
Joined: 21 Nov 2015
Posts: 15
Concentration: Finance, Economics
Schools: Erasmus '20
Re: Hoses P and T simultaneously fill an empty swimming pool that has a ca  [#permalink]

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27 Aug 2018, 08:58
Capacity 45,000l
We need to know the rate of P+T
1. A rate of P, but we do not know the rate of T - UNSUFF
2. We do not know the rate of T – UNSUFF
1-2 still we do not have the rate of T – UNSUFF
E

P.S. For DS work-rade / distance –rate question, you do not need to waste your time doing this example, just take a look what current examples are asking you for and what sort of information is giving to you
Re: Hoses P and T simultaneously fill an empty swimming pool that has a ca   [#permalink] 27 Aug 2018, 08:58
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