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What was the amount of money donated to a certain charity?

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What was the amount of money donated to a certain charity? [#permalink] New post 03 Jan 2014, 05:13
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Question Stats:

79% (01:25) correct 20% (00:27) wrong based on 72 sessions
The Official Guide For GMAT® Quantitative Review, 2ND Edition

What was the amount of money donated to a certain charity?

(1) Of the amount donated, 40 percent came from corporate donations.
(2) Of the amount donated, $1.5 million came from noncorporate donations.

Data Sufficiency
Question: 17
Category: Arithmetic Percents
Page: 154
Difficulty: 600


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Re: What was the amount of money donated to a certain charity? [#permalink] New post 03 Jan 2014, 05:14
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SOLUTION

What was the amount of money donated to a certain charity?

(1) Of the amount donated, 40 percent came from corporate donations. This implies that of the amount donated, 60 percent came from noncorporate donations. Not sufficient.

(2) Of the amount donated, $1.5 million came from noncorporate donations. Not sufficient.

(1)+(2) 0.6*{total} = $1.5 million. We can solve for {total}. Sufficient.

Answer: C.
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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: What was the amount of money donated to a certain charity? [#permalink] New post 04 Jan 2014, 00:53
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Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND Edition

What was the amount of money donated to a certain charity?

(1) Of the amount donated, 40 percent came from corporate donations.
(2) Of the amount donated, $1.5 million came from noncorporate donations.


1) we don't know what 40% is equal to hence we cannot deduce the total amount
2)we don't how much came from non corporate donations hence also insuff.

1+2
we know 40% from corporate donations hence 60% from non corporate donations
60% = $1.5 Million
hence we can find 100%

1+2 Sufficient
Answer C
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Re: What was the amount of money donated to a certain charity? [#permalink] New post 05 Jan 2014, 10:38
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Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND Edition

What was the amount of money donated to a certain charity?

(1) Of the amount donated, 40 percent came from corporate donations.
(2) Of the amount donated, $1.5 million came from noncorporate donations.



Statement 1) No actual value of money mentioned but the question asks about amount of money. Not Sufficient.
Statement 2) Though the value of money is specified, but the relationship of "noncorporate donations" with the "money donated" is not specified. So Not Sufficient.

Combining the two statements, we know $1.5 million corresponds to 60% (assuming "corporate donations" and "noncorporate donations" are mutually exclusive - Kind of open to interpretation), total money can be calculated. Hence option C)
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Posts: 18533
Followers: 3198

Kudos [?]: 21483 [0], given: 2547

Re: What was the amount of money donated to a certain charity? [#permalink] New post 05 Jan 2014, 11:06
Expert's post
SOLUTION

What was the amount of money donated to a certain charity?

(1) Of the amount donated, 40 percent came from corporate donations. This implies that of the amount donated, 60 percent came from noncorporate donations. Not sufficient.

(2) Of the amount donated, $1.5 million came from noncorporate donations. Not sufficient.

(1)+(2) 0.6*{total} = $1.5 million. We can solve for {total}. Sufficient.

Answer: C.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

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.


What are GMAT Club Tests?
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Re: What was the amount of money donated to a certain charity?   [#permalink] 05 Jan 2014, 11:06
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