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GRE Prep Club Legend  Joined: 07 Jun 2014
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QOTD#12 Happy Puppy pet depot sales [#permalink]
Expert's post 00:00

Question Stats: 40% (38:40) correct 60% (05:38) wrong based on 5 sessions Question 9 In 2003, how many categories of animals individually accounted for more than 20% of the depot’s annual sales?
Enter the values

[Reveal] Spoiler: OA
3

Question 10 From 2002 to 2003, what was the increase in the total number of goldfish sold?
A. 5
B. 70
C. 225
D. 850
E. 1,380

[Reveal] Spoiler: OA
D

Question 11 By approximately what percent did total cat sales change from 2002 to 2003?
A. 0%
B. 1%
C. 2%
D. 5%
E. 9%

[Reveal] Spoiler: OA
A

Question 12 The total sales at Happy Puppy Pet Depot is calculated by adding the sales from Store A to those from Store B. Both stores sold an equal number of pets in 2002. If the sales of pets in Store A increased by 34% in 2003, by approximately what percent did sales decrease in Store B during the same year?
A. 12%
B. 34%
C. 42%
D. 66%
E. 97%

[Reveal] Spoiler: OA
A

Drill 1
Question: 9, 10, 11, 12
Page: 457-458

[Reveal] Spoiler: Img
Attachment: di new.jpg [ 45.29 KiB | Viewed 3760 times ]

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Sandy
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Re: QOTD#12 Happy Puppy pet depot sales [#permalink]
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Expert's post
Explanation

Question 9. In 2003, only dogs and goldfish each accounted for more than 20% of the store’s total sales.
Hence 2 is the answer.

Question 10. The number of goldfish sold in 2002 was 35% of 9,000, or 3,150 goldfish. The number of goldfish in 2003 was 40% of 10,000, or 4,000. To find the difference, simply subtract: 4,000 - 3,150 = 850.
Hence option D is correct.

Question 11. Total cat sales in 2002 can be calculated as 10% of 9,000, or 900 total cats. In 2003, the figure is 9% of 10,000, or 900 total cats. Therefore, the same number of cats was sold in both years. The answer is choice (A).
Hence option A is correct.

Question 12. Store A and Store B both sold an equal number of pets in 2002, meaning both sold 4,500 animals. If the total number of pets sold by Store A then increases by 34%, Store A sold 6,030 animals in 2003. The total number of animals sold in 2003 was 10,000, meaning store B sold only 3,970 pets. Use the percent change formula: $$\frac{(4500 - 3970)}{4500}*100$$ to get choice (A).
Hence option A is correct.
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Re: QOTD#12 Happy Puppy pet depot sales [#permalink]
Hi Sandy,

Thanks for the answer.

I think the question needs to be reviewed as data shows total number of animals were 10000 in 2002 and 9000 in 2003 .However, the answers are calculated considering
total number of animals as 9000 in 2002 and 10000 in 2003.
GRE Prep Club Legend  Joined: 07 Jun 2014
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Re: QOTD#12 Happy Puppy pet depot sales [#permalink]
Expert's post
PankajPatel wrote:
Hi Sandy,

Thanks for the answer.

I think the question needs to be reviewed as data shows total number of animals were 10000 in 2002 and 9000 in 2003 .However, the answers are calculated considering
total number of animals as 9000 in 2002 and 10000 in 2003.

Hi

thanks for pointing it out! You are quite right that the calculations based off of the data is wrong. These are the official answers given in the Princeton review.

Regards
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Re: QOTD#12 Happy Puppy pet depot sales [#permalink]
please do neccesary changes there are some flaws in the question and the solution provided below
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Re: QOTD#12 Happy Puppy pet depot sales [#permalink]
Thanks Sandy for pointing out the glaring mistake. This is not the *only* mistake I see in Princeton exercise.
Darker bar is for 2002 which has 35% gold fish sold in total of 10,000, comes out as 3500.
Lighter bar is for 2003 which has 40% gold fish sold in total of 9000, comes out to be 3600.
Hence the correct answer is 100 but no where in the option. Manager Joined: 27 Sep 2017
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Re: QOTD#12 Happy Puppy pet depot sales [#permalink]
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sandy wrote:
Explanation

Question 9. In 2003, only dogs and goldfish each accounted for more than 20% of the store’s total sales.
Hence 2 is the answer.

Question 10. The number of goldfish sold in 2002 was 35% of 9,000, or 3,150 goldfish. The number of goldfish in 2003 was 40% of 10,000, or 4,000. To find the difference, simply subtract: 4,000 - 3,150 = 850.
Hence option D is correct.

Question 11. Total cat sales in 2002 can be calculated as 10% of 9,000, or 900 total cats. In 2003, the figure is 9% of 10,000, or 900 total cats. Therefore, the same number of cats was sold in both years. The answer is choice (A).
Hence option A is correct.

Question 12. Store A and Store B both sold an equal number of pets in 2002, meaning both sold 4,500 animals. If the total number of pets sold by Store A then increases by 34%, Store A sold 6,030 animals in 2003. The total number of animals sold in 2003 was 10,000, meaning store B sold only 3,970 pets. Use the percent change formula: $$\frac{(4500 - 3970)}{4500}*100$$ to get choice (A).
Hence option A is correct.

for Q9 the answer should be 3 NOT 2 since hedgehog also accounts for more than 20%. Please check it out.
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Re: QOTD#12 Happy Puppy pet depot sales [#permalink]
Expert's post
Peter wrote:
sandy wrote:
Explanation

Question 9. In 2003, only dogs and goldfish each accounted for more than 20% of the store’s total sales.
Hence 2 is the answer.

Question 10. The number of goldfish sold in 2002 was 35% of 9,000, or 3,150 goldfish. The number of goldfish in 2003 was 40% of 10,000, or 4,000. To find the difference, simply subtract: 4,000 - 3,150 = 850.
Hence option D is correct.

Question 11. Total cat sales in 2002 can be calculated as 10% of 9,000, or 900 total cats. In 2003, the figure is 9% of 10,000, or 900 total cats. Therefore, the same number of cats was sold in both years. The answer is choice (A).
Hence option A is correct.

Question 12. Store A and Store B both sold an equal number of pets in 2002, meaning both sold 4,500 animals. If the total number of pets sold by Store A then increases by 34%, Store A sold 6,030 animals in 2003. The total number of animals sold in 2003 was 10,000, meaning store B sold only 3,970 pets. Use the percent change formula: $$\frac{(4500 - 3970)}{4500}*100$$ to get choice (A).
Hence option A is correct.

for Q9 the answer should be 3 NOT 2 since hedgehog also accounts for more than 20%. Please check it out.

You are right: dogs, goldfish, hedgehogs.
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Re: QOTD#12 Happy Puppy pet depot sales [#permalink]
Anyone have right answers and explanations for Q. 11 and Q.12? I think Q.11 should be B, since there is a slight change visible in graphs.
And for Q.12, I got the answer as 54% decrease but there is no such option.
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Re: QOTD#12 Happy Puppy pet depot sales [#permalink]
Too many mistakes. I.e.

The amount in store B is 9000 not 10,000;

12.

Thus, if in Store B the amount of pets increased by 34% giving 6030, then the number in store B is 9000-9030 = 2970.

Thus the percent decrease is given by
(2970 - 4500)/4500 = -0.34

Other mistakes have been pointed out above but no one redid the calculation for number 12, so here it is.
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