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Jake and Ryan worked together on a job for which they were each paid

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Intern
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Joined: 13 Mar 2018
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Jake and Ryan worked together on a job for which they were each paid  [#permalink]

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New post 17 May 2018, 08:36
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Question Stats:

47% (02:19) correct 53% (02:59) wrong based on 57 sessions

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Jake and Ryan worked together on a job for which they were each paid a dollars in advance. If Jake spent 20% more time working on the job than Ryan did, and Ryan gave Jake b dollars, so that their hourly wages were equal, then, in terms of b, how much was Jake paid in advance?

(A) 0.8b
(B) 1.1b
(C) 1.2b
(D) 10b
(E) 11b


Please help with the shortest approach.
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Posts: 47983
Re: Jake and Ryan worked together on a job for which they were each paid  [#permalink]

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New post 17 May 2018, 08:51
Siddharth18081991 wrote:
Jake and Ryan worked together on a job for which they were each paid a dollars in advance. If Jake spent 20% more time working on the job than Ryan did, and Ryan gave Jake b dollars, so that their hourly wages were equal, then, in terms of b, how much was Jake paid in advance?

(A) 0.8b
(B) 1.1b
(C) 1.2b
(D) 10b
(E) 11b


Please help with the shortest approach.


It's a copy of the following Official guide question: https://gmatclub.com/forum/john-and-mar ... 44782.html
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Re: Jake and Ryan worked together on a job for which they were each paid  [#permalink]

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New post 17 May 2018, 09:09
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Got it thanks a lot.

(a+b)/1.2t = (a-b)/t --> 0.2a=22b --> a=11b

Just one question, in such type of word problems if the equation immediately does not pop up in the head, is it advisable to plug in the variables?
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Re: Jake and Ryan worked together on a job for which they were each paid  [#permalink]

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New post 17 May 2018, 23:32
SidR wrote:
Just one question, in such type of word problems if the equation immediately does not pop up in the head, is it advisable to plug in the variables?


Plugging in numbers in word problems can be a good approach sometimes, provided you do that in a smart way. If you have gone through the solutions of the question referred by Bunuel, you must have understood that just assuming any number may worsen the situation, rather than help in solving.

Also, another risk you may face – plugging in numbers may not give you exhaustive list of solutions every time. Some cases you may need to check all the options, even if one option gets satisfied with your plugged-in value.

If you can do it smartly, then consider it as an alternate way only.
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Re: Jake and Ryan worked together on a job for which they were each paid  [#permalink]

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New post 09 Jun 2018, 08:09
After giving and taking b dollars

(a+b)/1.2t = (a-b)/t

--> 0.2a=22b
--> a=11b

Posted from my mobile device
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Re: Jake and Ryan worked together on a job for which they were each paid  [#permalink]

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New post 09 Jun 2018, 08:27
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SidR wrote:
Jake and Ryan worked together on a job for which they were each paid a dollars in advance. If Jake spent 20% more time working on the job than Ryan did, and Ryan gave Jake b dollars, so that their hourly wages were equal, then, in terms of b, how much was Jake paid in advance?

(A) 0.8b
(B) 1.1b
(C) 1.2b
(D) 10b
(E) 11b


Please help with the shortest approach.



The shortest approach will be to assume the # of hours of work required.

Lets assume the job required 10 hours of work for a pay of X dollar.

So Ryan worked for 10 hours for X dollars.

& Jake worked for 20% more time than Ryan, hence Jake worked for 12 hours for X dollars.

Now Ryan gave Jake "b" dollars, which made their hourly pay equal.

So, we get (X-b)/10 = (X+b)/12

Solving it for X we get X = 11b.

Answer E.

Thanks,
GyM
Re: Jake and Ryan worked together on a job for which they were each paid &nbs [#permalink] 09 Jun 2018, 08:27
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