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A computer retailer sells only TFT and LCD style monitors. According

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Bunuel
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A computer retailer sells only TFT and LCD style monitors. According [#permalink] New post   29 Jul 2015, 03:22
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A computer retailer sells only TFT and LCD style monitors. According to the graph above, where 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 total number of monitors sold the greatest?

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


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Re: A computer retailer sells only TFT and LCD style monitors. According [#permalink] New post   29 Jul 2015, 04:23
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Bunuel wrote:

A computer retailer sells only TFT and LCD style monitors. According to the graph above, where 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 total number of monitors sold the greatest?

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


Kudos for a correct solution.

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Attachment:
tft-lcd-diagrams.gif


IMO: C

Total sales = TFT + LCD monitors
In graph only Total sales and TFT are mentioned.

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

Now we can calculate the values which is time consuming or by observation we can determine the highest which is as follows:

Consider 4/9 --> if it was 4.5/9 then it would be 1/2 since the numerator is less than 4.5 --> the fraction will be less than 50% or 0.5
Similarly \(\frac{5}{11}\) \(\frac{5}{13}\) \(\frac{6}{13}\)

Thus 1/2 is highest=> Wednesday
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Re: A computer retailer sells only TFT and LCD style monitors. According [#permalink] New post   29 Jul 2015, 06:36
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Bunuel wrote:

A computer retailer sells only TFT and LCD style monitors. According to the graph above, where 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 total number of monitors sold the greatest?

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


Kudos for a correct solution.

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The attachment tft-lcd-diagrams.gif is no longer available


Answer: option C

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Re: A computer retailer sells only TFT and LCD style monitors. According [#permalink] New post   29 Jul 2015, 07:08
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Mon - 8 : 18 = 4 : 9
Tue - 10 : 22 = 5 : 11
Wed - 12 : 24 = 1 : 2
Thu - 10 : 26 = 5 : 13
Fri - 12 : 26 = 6 : 13

Wednesday's ratio comes out to 50%, on every other day the ratio is clearly less than 50%, so Ans (C).
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Re: A computer retailer sells only TFT and LCD style monitors. According [#permalink] New post   29 Jul 2015, 07:19
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[quote="Bunuel"]
A computer retailer sells only TFT and LCD style monitors. According to the graph above, where 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 total number of monitors sold the greatest?

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


Kudos for a correct solution.

Ans: C - Wednesday

By a close examination we can narrow down the options to Wednesday and Friday. All others have a ratio that would be smaller than these two options (since the sales are closer in number to each other and hence would not be the greatest)

Wednesday: 24/12 = 2
Friday: 26/14 = 13/7 which is obviously less than 2

Therefore, C, Wednesday
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Re: A computer retailer sells only TFT and LCD style monitors. According [#permalink] New post   29 Jul 2015, 17:48
The LCDs are in greater proportion when TFTs are of lesser proportion. Had to calculate each one separately.
A. \(<\frac{1}{2}\)
B. \(<\frac{1}{2}\)
C. \(\frac{1}{2}\)
D. \(<\frac{1}{2}\)
E. \(<\frac{1}{2}\)

IMO. C
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Re: A computer retailer sells only TFT and LCD style monitors. According [#permalink] New post   30 Jul 2015, 07:36
The answer is c as all other values are less than 0.5
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Re: A computer retailer sells only TFT and LCD style monitors. According [#permalink] New post   17 Aug 2015, 09:55
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Bunuel wrote:

A computer retailer sells only TFT and LCD style monitors. According to the graph above, where 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 total number of monitors sold the greatest?

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


Kudos for a correct solution.

Show Spoiler
Attachment:
tft-lcd-diagrams.gif


800score 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 style monitors. According [#permalink] New post   30 Apr 2018, 06:54
The answer is he ratio of the difference to the total for each day of the week. The answer comes to Wednesday or option C.
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Re: A computer retailer sells only TFT and LCD style monitors. According [#permalink] New post   11 May 2019, 18:10
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Re: A computer retailer sells only TFT and LCD style monitors. According [#permalink]
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