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# A computer retailer sells only TFT and LCD monitors. In the graph abov

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Math Expert
Joined: 02 Sep 2009
Posts: 43867
A computer retailer sells only TFT and LCD monitors. In the graph abov [#permalink]

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26 Dec 2014, 07:37
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Difficulty:

55% (hard)

Question Stats:

58% (01:39) correct 42% (01:24) wrong based on 245 sessions

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Tough and Tricky questions: Word Problems.

A computer retailer sells only TFT and LCD monitors. In the graph above, the x-axis represents the day of the week and the y-axis represents the number of monitors sold. On which day was the ratio of the number of LCD monitors sold to the total number of monitors sold the greatest?

A. Monday
B. Tuesday
C. Wednesday
D. Thursday
E. Friday

Kudos for a correct solution.

[Reveal] Spoiler:
Attachment:

2014-12-26_1936.png [ 7.5 KiB | Viewed 2592 times ]
[Reveal] Spoiler: OA

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GMAT 1: 770 Q50 V45
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Re: A computer retailer sells only TFT and LCD monitors. In the graph abov [#permalink]

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26 Dec 2014, 08:42
To calculate the share of LCD monitors in total monitor sales, we first need to determine the number of LCD sales. Note that the total number of display sales is directly shown in the graph, but the number of LCD display sales needs to be calculated as the difference of total monitors and TFT monitors.

We get the following values:
$$Mon: \frac{10}{18}, Tue: \frac{10}{22}, Wed: \frac{12}{24}, Thu: \frac{10}{26}, Fri: \frac{12}{26}$$.

Now we can compare the figures and see that all values, except of Wednesday's number are smaller than $$\frac{1}{2}$$. Answer C it is.
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Manager
Joined: 21 Aug 2010
Posts: 186
Location: United States
GMAT 1: 700 Q49 V35
Re: A computer retailer sells only TFT and LCD monitors. In the graph abov [#permalink]

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26 Dec 2014, 16:42
Bunuel wrote:

Tough and Tricky questions: Word Problems.

A computer retailer sells only TFT and LCD monitors. In the graph above, the x-axis represents the day of the week and the y-axis represents the number of monitors sold. On which day was the ratio of the number of LCD monitors sold to the total number of monitors sold the greatest?

A. Monday
B. Tuesday
C. Wednesday
D. Thursday
E. Friday

Kudos for a correct solution.

[Reveal] Spoiler:
Attachment:
2014-12-26_1936.png

LCD sales on each day = Mon-8. Tue-10 Wed-12 Thu-10 Fri-12

Ratio: Monday - 8/18
Tuesday - 10/22
Wednesday - 12/24
Thursday - 10/26
Friday - 12/26

Simplifying that Wednesday has the greatest ratio of LCD sales out of total sales

Ans C
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Re: A computer retailer sells only TFT and LCD monitors. In the graph abov [#permalink]

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26 Dec 2014, 23:50
Since we want the ratio of LCD/Total Tv to be highest we need balance maximizing the LCD TV sales and keeping the total TV sales low.

If you observe the graph keenly you will realize that Wednesday is the only day when LCD Sales are equal to 50% of total sales. All rest days the % is much lower. Hence the ratio will be highest for Wednesday. Answer is C.
Manager
Joined: 13 Oct 2013
Posts: 132
Concentration: Strategy, Entrepreneurship
Re: A computer retailer sells only TFT and LCD monitors. In the graph abov [#permalink]

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01 Jan 2015, 10:14
A computer monitor dealer sells only TFT and LCD monitors. Based on the graph in the attachment , where the X axis represents the day of the week and the Y axis represents the amount of monitors sold , on which day was the share of LCD monitor sales the greatest.

a)Monday
b)Tuesday
c)Wednesday
d)Thursday
e)Friday

Attachments

pic.docx [24.17 KiB]

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Manager
Joined: 22 Oct 2014
Posts: 88
Concentration: General Management, Sustainability
GMAT 1: 770 Q50 V45
GPA: 3.8
WE: General Management (Consulting)
Re: A computer retailer sells only TFT and LCD monitors. In the graph abov [#permalink]

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01 Jan 2015, 11:28
a-computer-retailer-sells-only-tft-and-lcd-monitors-in-the-graph-abov-190775.html
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$$\sqrt{-1}$$ $$2^3$$ $$\Sigma$$ $$\pi$$ ... and it was delicious!

Please consider giving +1 Kudos if deserved!

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Re: A computer retailer sells only TFT and LCD monitors. In the graph abov [#permalink]

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02 Jan 2015, 01:33
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No calculations done. Refer diagram below:

Attachment:

2014-12-26_1936.png [ 22.07 KiB | Viewed 2159 times ]

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Math Expert
Joined: 02 Sep 2009
Posts: 43867
Re: A computer retailer sells only TFT and LCD monitors. In the graph abov [#permalink]

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02 Jan 2015, 04:19
sunita123 wrote:
A computer monitor dealer sells only TFT and LCD monitors. Based on the graph in the attachment , where the X axis represents the day of the week and the Y axis represents the amount of monitors sold , on which day was the share of LCD monitor sales the greatest.

a)Monday
b)Tuesday
c)Wednesday
d)Thursday
e)Friday

PLEASE SEARCH BEFORE POSTING! Thank you.
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Math Expert
Joined: 02 Sep 2009
Posts: 43867
Re: A computer retailer sells only TFT and LCD monitors. In the graph abov [#permalink]

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08 Jan 2015, 08:37
Bunuel wrote:

Tough and Tricky questions: Word Problems.

A computer retailer sells only TFT and LCD monitors. In the graph above, the x-axis represents the day of the week and the y-axis represents the number of monitors sold. On which day was the ratio of the number of LCD monitors sold to the total number of monitors sold the greatest?

A. Monday
B. Tuesday
C. Wednesday
D. Thursday
E. Friday

Kudos for a correct solution.

[Reveal] Spoiler:
Attachment:
2014-12-26_1936.png

OFFICIAL SOLUTION:

The number of LCD sales is the difference between total sales and TFT sales.

For each day of the week, we can determine the ratio of the number of LCD monitors sold to the total number of monitors sold:
Monday: (18 – 10)/18 = 4/9
Tuesday: (22 – 12)/22 = 5/11
Wednesday: (24 – 12)/24 = 1/2
Thursday: (26 – 16)/26 = 5/13
Friday: (26 – 14)/26 = 6/13.

The greatest fraction is 1/2, so the ratio on Wednesday is the largest.

The correct answer is choice (C).
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Re: A computer retailer sells only TFT and LCD monitors. In the graph abov [#permalink]

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16 Aug 2017, 02:40
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Re: A computer retailer sells only TFT and LCD monitors. In the graph abov   [#permalink] 16 Aug 2017, 02:40
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