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# A Question on multiple graph charts with varied weights

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A Question on multiple graph charts with varied weights [#permalink]

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30 Nov 2012, 08:12
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Hello friends,

That Integrated Reasoning is a new addition to GMAT is an old news now. It is time to address the need of the test takers to attempt
variety of IR questions that are true reflection of Official Guide questions. e-GMAT has launched 15+ hours of  interactive audio visual content
on IR. It encompasses 35 concepts, 120+ original questions, and 2 full length Mock Tests.

You must have come across multiple Line graph charts, but seldom you see multiple graph charts with varied weights.
Here is one for you fresh from the oven. Try it out. Over the next week, we will be posting a few more practice questions.

'Dereck and Sons sells pigments in 4 regions. The data presented in the graph shows sales in 2 regions & average sales for all 4 regions
over the period of 12 months in the year 2011.'

Based on the given information select the options that most accurately complete the following statements.

1. The worst performance in terms of combined sales for other regions that Dereck and Sons operated in was in the month[s] of _______.

A. March B. June & July C. July & August D. June, July & August E. November

2. Combined sales of other 2 regions for the month of June'11 is \$ __________M.

A. 1975 B. 2350 C. 2550 D. 4700
Attachments

Graph.png [ 27.98 KiB | Viewed 4300 times ]

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Re: A Question on multiple graph charts with varied weights [#permalink]

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30 Nov 2012, 09:57
My answers are E & C
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Did you find this post helpful?... Please let me know through the Kudos button.

Thanks To The Almighty - My GMAT Debrief

GMAT Reading Comprehension: 7 Most Common Passage Types

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Re: A Question on multiple graph charts with varied weights [#permalink]

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01 Dec 2012, 12:45
egmat wrote:
Hello friends,

That Integrated Reasoning is a new addition to GMAT is an old news now. It is time to address the need of the test takers to attempt
variety of IR questions that are true reflection of Official Guide questions. e-GMAT has launched 15+ hours of  interactive audio visual content
on IR. It encompasses 35 concepts, 120+ original questions, and 2 full length Mock Tests.

You must have come across multiple Line graph charts, but seldom you see multiple graph charts with varied weights.
Here is one for you fresh from the oven. Try it out. Over the next week, we will be posting a few more practice questions.

'Dereck and Sons sells pigments in 4 regions. The data presented in the graph shows sales in 2 regions & average sales for all 4 regions
over the period of 12 months in the year 2011.'

Based on the given information select the options that most accurately complete the following statements.

1. The worst performance in terms of combined sales for other regions that Dereck and Sons operated in was in the month[s] of _______.

A. March B. June & July C. July & August D. June, July & August E. November

2. Combined sales of other 2 regions for the month of June'11 is \$ __________M.

A. 1975 B. 2350 C. 2550 D. 4700

IMO....question one A for second question I dn't knw,,Can Any one help me in figuring out the second question because I'm unable to find the data for the Other 2 regions,,while in case of question one I used graph of average line to find answer

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Re: A Question on multiple graph charts with varied weights [#permalink]

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01 Dec 2012, 13:34
1. E
4 times average minus sum of region 1 and region 2.

This will give the combined sales of other regions. This will be minimum if sum of region 1 and 2 is maximum which occurs for November

2. C
Same formula as for the 1st question . 4*1500 - ( 1550 + 1900) = 2550

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Re: A Question on multiple graph charts with varied weights [#permalink]

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06 Dec 2012, 11:03
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Hello friends,

Indeed the answers for Q1 is November, & for Q2 is \$2550 M.

Let us understand the time management aspect of GMAT IR. You need to attempt 12 questions in 30 minutes. This means on an average 2.5 minute per dataset!

As far as second part of the question is concerned, it is quite obvious that one will have to calculate the numerical value of sales for other 2 regions with the application of formula- '4 times average minus sum of region 1 and region 2'. However, when it comes to first part of the question, there are 5 months to consider for probable answers- March, June, July, August, & November.

It is not advisable to calculate the values of other 2 regions' sales for all 5 months. We can simply observe the graph, & eliminate few months as probable answer.

Let's understand our objective. We have to minimize 4*Average sales - Region 1 sales - Region 2 sales. This leads to a conclusion that an ideal worst performing month would be the one whose Average sales are lowest & Region 1 & 2 sales are the highest among all option months.

Well, there is no ideal month present in the graph, whose Average sales are lowest & Region 1 & 2 sales are the highest as well.

Because Lowest Average sales month - March;
Highest Region 1 sales month - November;
Highest Region 2 sales month- November.

The shortlisted options would be March, & November only. We can discard other 3 months, as they do not qualify. Pl. see the analysis.

June & July months are disqualified because their region 2 sales are the lowest among all months. It will not help minimize regions 3 & 4 sales. Similarly, August month is also disqualified because its region 1 & 2 sales are at mediocre level. Again, it will not help minimize regions 3 & 4 sales. So we discard these months.

Now can we zero in on March or November without calculating numerical values of regions 3 & 4 sales?

Let's look at our findings again for March & November months.
While November month has 2 positive factors - Highest Region 1 & 2 sales, March month has only one positive factor - Lowest Average sales.
So can we discard March vis-a-vis November now?

Well not really! And the reason is that the weight of Average sales is 4 times that of region 1 or 2 sales in the formula.

So there are 2 approaches to conclude March or November as an answer.

Approach 1:- Observe the graph again & look for 4 times the gain on account of Average sales for the month of March Vs. the gain on account of Region 1 & 2 sales for the month of November.

March:- Gain of 1/2 scale over November. So 4 times gain would be '4*1/2 scale = 2 scale'.
November:- Gain of 3 scale over March for region 1, & gain of 1/2 scale over March for region 2. So collectively total gain of 3.5 scale over March.

So it is obvious that Total gain of November over March is more, hence November month is the answer.

Approach 2:- You better calculate the sales values for March & November. Here it is.

Region 3 & 4 sales for November = 4*1500 - 2000-1950 = \$2050 M
Region 3 & 4 sales for November = 4*1450 - 1700-1900 = \$2200 M. .

So clearly the answer is November month.

Should you wish to see interactive audio-visual solution to this question, pl. visit e-GMAT free trial.

Regards!

Shalabh Jain
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Re: A Question on multiple graph charts with varied weights [#permalink]

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12 Dec 2012, 06:33
Hey Shalabh,
This is an excellent analysis.. Kudos man..!!

Would like to see more of these type of qs. from e-GMAT to keep us motivated in the process..Please fire the bullets.

One question related to your analysis : Can we apply the method of 1st slot shortlisting for all qs. of this type in GMAT ?
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Re: A Question on multiple graph charts with varied weights [#permalink]

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13 Dec 2012, 02:13
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debayan222 wrote:
Hey Shalabh,
This is an excellent analysis.. Kudos man..!!

Would like to see more of these type of qs. from e-GMAT to keep us motivated in the process..Please fire the bullets.

One question related to your analysis : Can we apply the method of 1st slot shortlisting for all qs. of this type in GMAT ?

Thank you Debayan for appreciating. We will keep posting more & more questions on IR. Recently, we posted an MSR question. Have a look at it.

Coming to your query. I will say YES, we must shortlist possible 1-3 contenders out of 4-6 option choices. In most of the questions, this strategy can be applied.

-Shalabh
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Kudos [?]: 8812 [1], given: 328

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Re: A Question on multiple graph charts with varied weights [#permalink]

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13 Dec 2012, 11:01
egmat wrote:
debayan222 wrote:
Hey Shalabh,
This is an excellent analysis.. Kudos man..!!

Would like to see more of these type of qs. from e-GMAT to keep us motivated in the process..Please fire the bullets.

One question related to your analysis : Can we apply the method of 1st slot shortlisting for all qs. of this type in GMAT ?

Thank you Debayan for appreciating. We will keep posting more & more questions on IR. Recently, we posted an MSR question. Have a look at it.

Coming to your query. I will say YES, we must shortlist possible 1-3 contenders out of 4-6 option choices. In most of the questions, this strategy can be applied.

-Shalabh

Thanks Shalabh..

--------------------------------------
And btw, how do we get to know about or can keep track on e-GMAT's posts in both verbal and IR ? Is there any way to fire a trigger as soon as there is new post on the forum from you guys..any idea ?
@bb/Souvik : Would request your inputs also on this.
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Kudos [?]: 1883 [0], given: 152

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Joined: 02 Nov 2011
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Re: A Question on multiple graph charts with varied weights [#permalink]

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13 Dec 2012, 22:37
debayan222 wrote:
egmat wrote:
debayan222 wrote:
Hey Shalabh,
This is an excellent analysis.. Kudos man..!!

Would like to see more of these type of qs. from e-GMAT to keep us motivated in the process..Please fire the bullets.

One question related to your analysis : Can we apply the method of 1st slot shortlisting for all qs. of this type in GMAT ?

Thank you Debayan for appreciating. We will keep posting more & more questions on IR. Recently, we posted an MSR question. Have a look at it.

Coming to your query. I will say YES, we must shortlist possible 1-3 contenders out of 4-6 option choices. In most of the questions, this strategy can be applied.

-Shalabh

Thanks Shalabh..

--------------------------------------
And btw, how do we get to know about or can keep track on e-GMAT's posts in both verbal and IR ? Is there any way to fire a trigger as soon as there is new post on the forum from you guys..any idea ?
@bb/Souvik : Would request your inputs also on this.

hi Debayayn,

Thank you for appreciating our work. I think you have not tried following questions.

what-you-choose-is-what-you-weigh-143895.html

I wish to ask you if you have gone through our free trial. Did you like it? What's your feedback?

Pl. wait for a tricky 2 part question today.

-Shalabh
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Re: A Question on multiple graph charts with varied weights [#permalink]

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14 Dec 2012, 11:47
Shalabh,
Thanks for sharing the link..I'll get back to you once I go through these.
But I'm afraid that MSR link is not accessible from my side.I don't understand what's the issue is... It's opening in a blank page after clicking on it.

And I've not gone through the trial yet but soon will check it out and share my feedback...BTW, I know it'll be great like your posts so please keep posting such wonderful topics in IR also to help us stay motivated
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Re: A Question on multiple graph charts with varied weights [#permalink]

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19 Dec 2012, 23:54
My bet: Nov and 2550.

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Re: A Question on multiple graph charts with varied weights [#permalink]

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09 Jan 2013, 00:51
Defintely E and C.
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Re: A Question on multiple graph charts with varied weights [#permalink]

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09 Jan 2013, 00:53
1. E
2. C

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Re: A Question on multiple graph charts with varied weights   [#permalink] 09 Jan 2013, 00:53
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