GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 20 Oct 2019, 15:39

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

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

Author Message
TAGS:

Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 58434
A computer retailer sells only TFT and LCD monitors. In the graph abov  [#permalink]

Show Tags

26 Dec 2014, 08:37
1
3
00:00

Difficulty:

55% (hard)

Question Stats:

63% (02:07) correct 37% (02:01) wrong based on 308 sessions

HideShow timer Statistics

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.

Attachment:

2014-12-26_1936.png [ 7.5 KiB | Viewed 3521 times ]

_________________
Manager
Joined: 22 Oct 2014
Posts: 87
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]

Show Tags

26 Dec 2014, 09:42
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.
_________________
$$\sqrt{-1}$$ $$2^3$$ $$\Sigma$$ $$\pi$$ ... and it was delicious!

Please consider giving +1 Kudos if deserved!
Manager
Joined: 21 Aug 2010
Posts: 164
Location: United States
GMAT 1: 700 Q49 V35
Re: A computer retailer sells only TFT and LCD monitors. In the graph abov  [#permalink]

Show Tags

26 Dec 2014, 17:42
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.

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
_________________
-------------------------------------
Manager
Joined: 27 Jan 2013
Posts: 172
Location: United States
Concentration: Entrepreneurship, Marketing
GMAT 1: 730 Q49 V40
GPA: 3.5
WE: Supply Chain Management (Telecommunications)
Re: A computer retailer sells only TFT and LCD monitors. In the graph abov  [#permalink]

Show Tags

27 Dec 2014, 00:50
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: 133
Concentration: Strategy, Entrepreneurship
Re: A computer retailer sells only TFT and LCD monitors. In the graph abov  [#permalink]

Show Tags

01 Jan 2015, 11:14
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]

_________________
---------------------------------------------------------------------------------------------
Kindly press +1 Kudos if my post helped you in any way
Manager
Joined: 22 Oct 2014
Posts: 87
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]

Show Tags

01 Jan 2015, 12:28
a-computer-retailer-sells-only-tft-and-lcd-monitors-in-the-graph-abov-190775.html
_________________
$$\sqrt{-1}$$ $$2^3$$ $$\Sigma$$ $$\pi$$ ... and it was delicious!

Please consider giving +1 Kudos if deserved!
SVP
Status: The Best Or Nothing
Joined: 27 Dec 2012
Posts: 1749
Location: India
Concentration: General Management, Technology
WE: Information Technology (Computer Software)
Re: A computer retailer sells only TFT and LCD monitors. In the graph abov  [#permalink]

Show Tags

02 Jan 2015, 02:33
1
1

No calculations done. Refer diagram below:

Attachment:

2014-12-26_1936.png [ 22.07 KiB | Viewed 3064 times ]

_________________
Kindly press "+1 Kudos" to appreciate
Math Expert
Joined: 02 Sep 2009
Posts: 58434
Re: A computer retailer sells only TFT and LCD monitors. In the graph abov  [#permalink]

Show Tags

02 Jan 2015, 05:19
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.
_________________
Math Expert
Joined: 02 Sep 2009
Posts: 58434
Re: A computer retailer sells only TFT and LCD monitors. In the graph abov  [#permalink]

Show Tags

08 Jan 2015, 09:37
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.

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).
_________________
Intern
Joined: 09 Apr 2018
Posts: 31
GPA: 4
A computer retailer sells only TFT and LCD monitors. In the graph abov  [#permalink]

Show Tags

18 Oct 2018, 04:56
For this question no calculation but just a conceptual understanding of fractions is necessary:

The question asks us to find the maximum ratio of $$\frac{LCD}{(LCD+TFT)}$$.
How do we maximise this fraction? By minimising the denominator, i.e. LCD+TFT, and maximising the numerator, i.e. LCD.
Hence, what we should be looking for in the graph, is a large difference between total sales and TFT (=LCD sales) and a low value for TFT sales. Wednesday fulfills our condition and is the answer.

Please hit Kudos if you liked this approach
A computer retailer sells only TFT and LCD monitors. In the graph abov   [#permalink] 18 Oct 2018, 04:56
Display posts from previous: Sort by