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Working independently, Tina can do a certain job in 12 hours

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Joined: 21 Jun 2014
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Location: India
Concentration: General Management, Technology
GMAT 1: 540 Q45 V20
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WE: Information Technology (Computer Software)
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Working independently, Tina can do a certain job in 12 hours  [#permalink]

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New post 27 Nov 2018, 08:06
3
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

94% (01:08) correct 6% (03:41) wrong based on 47 sessions

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Working independently, Tina can do a certain job in 12 hours. Working independently, Ann can do the same job in 9 hours. If Tina works independently at the job for 8 hours and then Ann works independently, how many hours will it take Ann to complete the remainder of the job?

(A) 2/3
(B) 3/4
(C) 1
(D) 2
(E) 3

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Re: Working independently, Tina can do a certain job in 12 hours  [#permalink]

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New post 27 Nov 2018, 10:05
HKD1710 wrote:
Working independently, Tina can do a certain job in 12 hours. Working independently, Ann can do the same job in 9 hours. If Tina works independently at the job for 8 hours and then Ann works independently, how many hours will it take Ann to complete the remainder of the job?

(A) 2/3
(B) 3/4
(C) 1
(D) 2
(E) 3

Project PS Butler : Question #43


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Work done by Tina \(\frac{8}{12}\)

Work left to be done \(\frac{1}{3}\)

Ann`s Rate \(\frac{1}{9}\)

To find how much time it will take for Ann to complete remainder of job divide work by rate

i.e \(\frac{\frac{1}{3}}{\frac{1}{9}}\) = \(\frac{1}{3} *\frac{9}{1}\) = \(3\)

IMO: E :)
GMAT Club Bot
Re: Working independently, Tina can do a certain job in 12 hours &nbs [#permalink] 27 Nov 2018, 10:05
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Working independently, Tina can do a certain job in 12 hours

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