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# DI Set #8- Daily Shirt Sales

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GRE Prep Club Legend
Joined: 07 Jun 2014
Posts: 4857
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
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DI Set #8- Daily Shirt Sales [#permalink]  09 May 2015, 10:19
Expert's post
00:00

Question Stats:

100% (00:32) correct 0% (00:00) wrong based on 5 sessions

The top and bottom of each bar indicate, respectively, the highest and lowest daily number of shirts sold during the month. The heavy line across each bar indicates the average (arithmetic mean) number of shirts sold per day during the month.

What was the range in the daily number of shirts sold during March?

(A) 20
(B) 45
(C) 50
(D) 60
(E) 70

The average (arithmetic mean) number of shirts sold per day during February was approximately what percent greater than the average number sold during January?

(A) 10%
(B) 20%
(C) 30%
(D) 40%
(E) 70%

[Reveal] Spoiler:
Attachment:

Quant1.jpg [ 41.58 KiB | Viewed 5438 times ]

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Sandy
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Re: DI Set #8 [#permalink]  20 May 2015, 14:45
Expert's post
sandy wrote:

The top and bottom of each bar indicate, respectively, the highest and lowest daily number of shirts sold during the month. The heavy line across each bar indicates the average (arithmetic mean) number of shirts sold per day during the month.

What was the range in the daily number of shirts sold during March?

(A) 20
(B) 45
(C) 50
(D) 60
(E) 70

We can see that, in March, the LOWEST daily shirt sales was 20 and the GREATEST daily shirt sales was 70
So, the RANGE = 70 - 20
= 50

[Reveal] Spoiler:
C

Cheers,
Brent
_________________

Brent Hanneson – Creator of greenlighttestprep.com

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GRE Instructor
Joined: 10 Apr 2015
Posts: 1746
Followers: 58

Kudos [?]: 1660 [0], given: 8

Re: DI Set #8 [#permalink]  20 May 2015, 14:49
Expert's post
sandy wrote:

The top and bottom of each bar indicate, respectively, the highest and lowest daily number of shirts sold during the month. The heavy line across each bar indicates the average (arithmetic mean) number of shirts sold per day during the month.

The average (arithmetic mean) number of shirts sold per day during February was approximately what percent greater than the average number sold during January?

(A) 10%
(B) 20%
(C) 30%
(D) 40%
(E) 70%

The solid bar denotes the AVERAGE daily shirts sales for that month.

In January, the average was about 25
In February, the average was about 35

Percent increase = 100(new - old)/old

So, percent increase = 100(35 - 25)/25
= 100(10)/25
= 40

[Reveal] Spoiler:
D

Cheers,
Brent
_________________

Brent Hanneson – Creator of greenlighttestprep.com

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# DI Set #8- Daily Shirt Sales

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