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How much money would Kimberly have saved if she had bought her cheese

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How much money would Kimberly have saved if she had bought her cheese [#permalink]

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New post 09 Jul 2015, 04:12
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Question Stats:

38% (01:08) correct 62% (01:13) wrong based on 145 sessions

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How much money would Kimberly have saved if she had bought her cheese at Deli A instead of Deli B?

(1) She bought equal amounts of Provolone and Swiss, and twice that amount of American.
(2) She bought 3.6 kilograms of cheese in all.


Kudos for a correct solution.

Attachment:
cheese_table.gif
cheese_table.gif [ 3.27 KiB | Viewed 1825 times ]

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Re: How much money would Kimberly have saved if she had bought her cheese [#permalink]

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New post 09 Jul 2015, 04:41
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Bunuel wrote:
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How much money would Kimberly have saved if she had bought her cheese at Deli A instead of Deli B?

(1) She bought equal amounts of Provolone and Swiss, and twice that amount of American.
(2) She bought 3.6 kilograms of cheese in all.


Kudos for a correct solution.

Attachment:
cheese_table.gif


Question : Money Saved = ?

Point to Note: Money Saved Depends on how much exact Total quantity of Cheese were purchased from Deli A because on every Cheese the amount saved is $1 per kg.

Statement 1: She bought equal amounts of Provolone and Swiss, and twice that amount of American.
This only tells us the ratio of quantities of Cheese purchased but not the exact Quantities of each of the three cheese Purchased or total amount of cheese purchased. Hence
NOT SUFFICIENT


Statement 2: She bought 3.6 kilograms of cheese in all.
This tells us the Total Quantity of Cheese purchased but not the exact Quantities of each of the three cheese Purchased.
i.e. Total Saving = 3.6*$1 = $3.6. Hence
SUFFICIENT

Answer: Option B
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Re: How much money would Kimberly have saved if she had bought her cheese [#permalink]

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New post 09 Jul 2015, 23:48
1
Ans: B

(A) She bought equal amounts of Provolone and Swiss, and twice that amount of American.

Provolone = Swiss = x
American = 2x

x = {1,2,3,4,5,6....}

insufficient


(B) She bought 3.6 kilograms of cheese in all.
As the difference is $1/kg - she will save $3.6
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Re: How much money would Kimberly have saved if she had bought her cheese [#permalink]

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New post 13 Jul 2015, 01:22
Since the difference between A and B is just 1 cent in every case, I get why answer should be 'B', Although the OA looks like its 'C' and I'm a little confused by that... Is there something I'm missing here?

GMATinsight wrote:
Bunuel wrote:
Image
How much money would Kimberly have saved if she had bought her cheese at Deli A instead of Deli B?

(1) She bought equal amounts of Provolone and Swiss, and twice that amount of American.
(2) She bought 3.6 kilograms of cheese in all.


Kudos for a correct solution.

Attachment:
cheese_table.gif


Question : Money Saved = ?

Point to Note: Money Saved Depends on how much exact Total quantity of Cheese were purchased from Deli A because on every Cheese the amount saved is $1 per kg.

Statement 1: She bought equal amounts of Provolone and Swiss, and twice that amount of American.
This only tells us the ratio of quantities of Cheese purchased but not the exact Quantities of each of the three cheese Purchased or total amount of cheese purchased. Hence
NOT SUFFICIENT


Statement 2: She bought 3.6 kilograms of cheese in all.
This tells us the Total Quantity of Cheese purchased but not the exact Quantities of each of the three cheese Purchased.
i.e. Total Saving = 3.6*$1 = $3.6. Hence
SUFFICIENT

Answer: Option B
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Re: How much money would Kimberly have saved if she had bought her cheese [#permalink]

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New post 13 Jul 2015, 03:12
Bunuel wrote:
Image
How much money would Kimberly have saved if she had bought her cheese at Deli A instead of Deli B?

(1) She bought equal amounts of Provolone and Swiss, and twice that amount of American.
(2) She bought 3.6 kilograms of cheese in all.


Kudos for a correct solution.

Attachment:
cheese_table.gif


800score Official Solution:

Statement (1) is not sufficient by itself because we only learn the ratio of the weights of the cheeses. Kimberly might have bought just a couple hundred grams, or she might have bought many kilograms.

Statement (2) tells us exactly what we need to know: how much cheese was purchased. No matter the distribution, each kilogram of cheese would be $1 less at Deli A. So the answer is (B).
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Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

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Re: How much money would Kimberly have saved if she had bought her cheese [#permalink]

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New post 13 Jul 2015, 03:13
Bunuel wrote:
Bunuel wrote:
Image
How much money would Kimberly have saved if she had bought her cheese at Deli A instead of Deli B?

(1) She bought equal amounts of Provolone and Swiss, and twice that amount of American.
(2) She bought 3.6 kilograms of cheese in all.


Kudos for a correct solution.

Attachment:
cheese_table.gif


800score Official Solution:

Statement (1) is not sufficient by itself because we only learn the ratio of the weights of the cheeses. Kimberly might have bought just a couple hundred grams, or she might have bought many kilograms.

Statement (2) tells us exactly what we need to know: how much cheese was purchased. No matter the distribution, each kilogram of cheese would be $1 less at Deli A. So the answer is (B).


Similar question to practice: deli-a-sells-the-equal-number-of-kilograms-of-american-provolone-and-190776.html
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Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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How much money would Kimberly have saved if she had bought her cheese [#permalink]

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New post 15 Aug 2015, 03:21
Let's say

Kimberly bought 3.4 kg American and 0.1 kg provolone and 0.1 kg swiss at "A"

&

Kimberly bought 0.1 kg American and 0.1 kg provolone and 3.4 kg swiss at "B"



Then
At "A" Total = (3.4x15) + (0.1x17) + (0.1x19) = 51 + 1.7 + 1.9 = 54.6
At "B" Total = (0.1x16) + (0.1x18) + (3.4x20) = 1.6 + 1.8 + 68 = 71.4

Difference = 16.8

Anyone can elaborate on this..??
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Re: How much money would Kimberly have saved if she had bought her cheese [#permalink]

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New post 04 Jan 2018, 01:48
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Re: How much money would Kimberly have saved if she had bought her cheese   [#permalink] 04 Jan 2018, 01:48
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