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ratios - DS22 OG10

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ratios - DS22 OG10 [#permalink]

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New post 19 Jan 2009, 03:09
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can someone please ellaborate algebraichally why if David's salary is more than 8/5 times John's salary, then the increase on the salary of David would be greater? Thanks

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Re: ratios - DS22 OG10 [#permalink]

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New post 19 Jan 2009, 03:14
jairus wrote:
can someone please ellaborate algebraichally why if David's salary is more than 8/5 times John's salary, then the increase on the salary of David would be greater? Thanks


Can you post the complete question?
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Re: ratios - DS22 OG10 [#permalink]

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New post 20 Jan 2009, 11:04
I'm sorry I can't because it's a question from the OG, so it's against the rules of the forum.
It has to be looked up in OG10
Thanks

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Re: ratios - DS22 OG10 [#permalink]

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New post 20 Jan 2009, 13:45
jairus wrote:
I'm sorry I can't because it's a question from the OG, so it's against the rules of the forum.
It has to be looked up in OG10
Thanks


Not everyone on this forum might be having the books / material that you are referring to. And if you notice, almost all the questions posted on this forum are from some book or the other. If it is against the rules of the forum, then all the questions on this forum also fall into this category. But I belive it is not, as long as the question is not from the real GMAT exam.

If you still need an explanation for the question, then please do post the question. This way not only you, but also rest of the others will also be benefitted.

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Re: ratios - DS22 OG10 [#permalink]

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New post 26 Jan 2009, 14:25
Here goes the complete question: A and B each received a salary increase. Which one received the greater dollar increase?
(1) A's salary increased 8%
(2) B's salary increased 5%

Answer is clearly E. My question, however, deat with the original explanation: if B's salary was more than 8/5 times A's salary, then B's salary increase would be the greater amount. How do we get to that statement?

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Re: ratios - DS22 OG10 [#permalink]

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New post 26 Jan 2009, 14:38
jairus wrote:
Here goes the complete question: A and B each received a salary increase. Which one received the greater dollar increase?
(1) A's salary increased 8%
(2) B's salary increased 5%

Answer is clearly E. My question, however, deat with the original explanation: if B's salary was more than 8/5 times A's salary, then B's salary increase would be the greater amount. How do we get to that statement?


Assume A's Salary = $100
8% increase = $8
B's Salary =$200
5% increase = $10
Which is greater dollar amount?
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Re: ratios - DS22 OG10 [#permalink]

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New post 26 Jan 2009, 22:50
x2suresh wrote:
jairus wrote:
Here goes the complete question: A and B each received a salary increase. Which one received the greater dollar increase?
(1) A's salary increased 8%
(2) B's salary increased 5%

Answer is clearly E. My question, however, deat with the original explanation: if B's salary was more than 8/5 times A's salary, then B's salary increase would be the greater amount. How do we get to that statement?


Assume A's Salary = $100
8% increase = $8
B's Salary =$200
5% increase = $10
Which is greater dollar amount?


Excellent explanation Suresh. Yeah, if % increase of A's salary is greater than B's salary, that doesn't mean the dollar amount increase in A's salary is more than B's.

If Singapour reports 2% increase in its GDP, and Afghanistan's GDP increases by 5% then... :)

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Re: ratios - DS22 OG10   [#permalink] 26 Jan 2009, 22:50
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