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Company X has exactly two product lines and no other sources of revenu

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Company X has exactly two product lines and no other sources of revenu  [#permalink]

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New post Updated on: 10 May 2018, 06:52
3
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A
B
C
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E

Difficulty:

  45% (medium)

Question Stats:

66% (01:35) correct 34% (02:01) wrong based on 129 sessions

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Company X has exactly two product lines and no other sources of revenue. If the consumer products line experiences a k% increase in revenue (where k is a positive integer) in 2015 from 2014 levels and the machine parts line experiences a k% decrease in revenue in 2015 from 2014 levels, did Company X's overall revenue increase or decrease in 2015?

(1) In 2014, the consumer products line generated more revenue than the machine parts line.
(2) k = 8

This is Question No 5 from the problem set of Chapter 5 (Percent) from Manhattan Guide 1 (FDP) edition 6.
My answer is (E)
The answer given in the book is (A). I m not convinced with the explanation given in the guide as it does not take into say anything about the year 2010 as asked in the question or the fact that decrease in revenue of machine parts is from 2004. I m rather convinced there is a typographical error.
Can anyone help?

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Bushra Maimuna

Originally posted by BushraMaimuna on 22 Nov 2017, 08:41.
Last edited by gmatbusters on 10 May 2018, 06:52, edited 3 times in total.
Edited a typo.
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Re: Company X has exactly two product lines and no other sources of revenu  [#permalink]

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New post 22 Nov 2017, 10:44
BushraMaimuna wrote:
Company X has exactly two product lines and no other sources of revenue. If the consumer products line experiences a k% increase in revenue (where k is a positive integer) in 2015 from 2014 levels and the machine parts line experiences a k% decrease in revenue in 2015 from 2004 levels, did Company X's overall revenue increase or decrease in 2010?

(1) In 2014, the consumer products line generated more revenue than the machine parts line.
(2) k = 8

This is Question No 5 from the problem set of Chapter 5 (Percent) from Manhattan Guide 1 (FDP) edition 6.
My answer is (E)
The answer given in the book is (A). I m not convinced with the explanation given in the guide as it does not take into say anything about the year 2010 as asked in the question or the fact that decrease in revenue of machine parts is from 2004. I m rather convinced there is a typographical error.
Can anyone help?



Yes it has to be a typo...
2004 must be 2014
And 2010 must be 2015

Edit .. just checked online. The above is correct. 2010 is 2015 and 2004 is 2014
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Re: Company X has exactly two product lines and no other sources of revenu  [#permalink]

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New post 08 May 2018, 20:27
chetan2u Bunuel gmatbusters niks18 amanvermagmat

Is the main post edited?
What is the correct question stem?
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Re: Company X has exactly two product lines and no other sources of revenu  [#permalink]

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New post 08 May 2018, 22:33
adkikani wrote:
chetan2u Bunuel gmatbusters niks18 amanvermagmat

Is the main post edited?
What is the correct question stem?


Hello

Have edited to replace 2010 with 2015. Now the question should make complete sense I hope
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Re: Company X has exactly two product lines and no other sources of revenu  [#permalink]

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New post 10 May 2018, 03:56
Hi amanvermagmat

Quote:
Have edited to replace 2010 with 2015. Now the question should make complete sense I hope


Do you also need to edit 2004 with 2014?

Even if I correct above, the question stem must say:

Quote:
Company X has exactly two product lines and no other sources of revenue. If the consumer products line experiences a k% increase in revenue (where k is a positive integer) in 2015 from 2014 levels and the machine productsline experiences a k% decrease in revenue in 2015 from 2004 levels, did Company X's overall revenue increase or decrease in 2015?


Usually Manhattan questions are supposed to be very good, but I am confused on this particular question.
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Re: Company X has exactly two product lines and no other sources of revenu  [#permalink]

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New post 10 May 2018, 06:50
adkikani

Question is corrected now.


Quote:
Have edited to replace 2010 with 2015. Now the question should make complete sense I hope


Do you also need to edit 2004 with 2014?

Even if I correct above, the question stem must say:

Quote:
Company X has exactly two product lines and no other sources of revenue. If the consumer products line experiences a k% increase in revenue (where k is a positive integer) in 2015 from 2014 levels and the machine productsline experiences a k% decrease in revenue in 2015 from 2014 levels, did Company X's overall revenue increase or decrease in 2015?


Usually Manhattan questions are supposed to be very good, but I am confused on this particular question.[/quote]
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Re: Company X has exactly two product lines and no other sources of revenu  [#permalink]

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New post 10 May 2018, 19:05
1
Easy one this one. Something increased by k% and something decreased by k%. We don’t know what the something amounts are, just that both had an increase and decrease, respectively, by k%.

1) Revenue is higher —> first something is greater —> larger # increased by k% means overall is larger. Sufficient.
2) Value of k is irrelevant.

A is my answer.
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Re: Company X has exactly two product lines and no other sources of revenu  [#permalink]

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New post 17 Feb 2019, 03:12
I'm just trying to prove my intuitive thought with math:

c = consumer products line, m = machine products line
The question is asking if new > old, while new c = 1 + ck/100 and new m = 1 - mk/100

(100+k)c + (100-k)m > 100c+100m ?
(100+k-100)c > (100-100+k)m ?
c > m ?

(1) c > m. Exact information we want to know. Sufficient.
(2) k is not needed to know as shown above. Insufficient.

Thus, the answer is A.

Hope it helps some who are seeking a clear method.
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Re: Company X has exactly two product lines and no other sources of revenu   [#permalink] 17 Feb 2019, 03:12
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