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canbtg: Senior | Next Rank: 100 Posts; Posts: 46; Joined: Fri Oct 11, 2013 5:42 am; Thanked: 4 times

by canbtg » Sun Apr 20, 2014 5:12 am

For each of the following, use the drop-down menu to create the most accurate statement on the basis of the information provided.

a. Among the six regions, the one with the most Techtyx customer transactions ranks ... in the number of product types marketed.

(first / second / third / fourth)

b. The region for which the value of the average transaction was greatest is region ...

( A / C / E / F)

OA[spoiler] a.fourth b.E
[/spoiler]

Per the OE , I do not understand why we need to divide the sales figures by the proportion of all Techtyx's transaction in that region to arrive at the average transaction value.Could some please simplify the approach to Second question ( may be with a simple example )

Thanks !

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Source: Beat The GMAT — Data Insights | Sun Apr 20, 2014 5:12 am

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by [email protected] » Sun Apr 20, 2014 12:44 pm

Hi canbtg,

The second question requires you to make some reasonable estimates and calculate the approximate AVERAGE transaction for a region. We're interested in finding the GREATEST average.

The answer choices narrow it down to 4 options: A, C, E and F

First, we have to determine some things about the 4 regions. The center of each circle lines up with a point on the X-axis that determines TOTAL SALES for that region. The number inside the circle represents the percent of total transactions. Here's what we know about the 4 regions:

Region A: about 500K in sales, 29% of the overall transactions.
Region C: about 800K in sales, 33% of the overall transactions.
Region E: about 700K in sales, 5% of the overall transactions.
Region F: about 900K in sales, 15% of the overall transactions.

To make this easy, let's say there were 100 total transactions. Since we're asked for the AVERAGE transaction, we'll need to use the Average Formula. This means....

Region A: 500K/29 ---> Less than 20K per
Region C: 800K/33 ---> Less than 30K per
Region E: 700K/5 ----> About 140K per
Region F: 900K/15 ---> About 60K per

The region with the highest average transaction is E

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Rich

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thuyduong91vnu: Junior | Next Rank: 30 Posts; Posts: 27; Joined: Mon Apr 11, 2016 10:56 pm

by thuyduong91vnu » Thu Apr 14, 2016 7:10 pm

Hi Rich,

Though I understand the solution for the 2nd question, I do feel the expression of the definition - The size of each circle and the corresponding number in the circle indicate the proportion of Techtyx customer transactions in that region - quite confusing

Could you help to explain it a bit?

When I first read it, I understood it as, let's say we have 5 different Appliance Companies (including Techtyx) selling appliances in A region and the total amount of customer transactions they do in such region sums up to 100,000$, so the amount of Techtyx customer transactions in that region will equal to 0.29 * 100,000$ = 29,000$.

I know that if understanding it in such way, we can not find out the answer, but how can I understand the intended meaning exactly in the first place

I mean, is it because this expression actually could be interpreted in such two ways, or because I am wrong here? And if so, what the definition will be to express the meaning above?

Thanks for your response

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[email protected]: Elite Legendary Member; Posts: 10392; Joined: Sun Jun 23, 2013 6:38 pmFollowed by: 511 members; Location: Palo Alto, CA; Thanked: 2867 times; GMAT Score:800

by [email protected] » Thu Apr 14, 2016 8:03 pm

Hi thuyduong91vnu,

The description underneath the table tells us that there are only 6 regions in which Techtyx sells products (labeled A through F). If you add up the 6 decimals that appear in those 6 circles, you end up with the number 1. The number 1 is the equivalent of 100% of Techtyx's sales, which makes sense since the prompt tells us that Techtyx sells products in 6 regions.

There's NO mention of any other company (much less 5 other companies), so it's not clear how you came up with that interpretation. The number 6 refers to 6 REGIONS in which Techtyx sells products.

GMAT assassins aren't born, they're made,
Rich

Contact Rich at [email protected]

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