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# Ina certain graduating class, 80 percent of the students wer

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Ina certain graduating class, 80 percent of the students wer [#permalink]  04 Mar 2017, 03:22
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Question Stats:

93% (00:32) correct 6% (00:35) wrong based on 49 sessions

In a certain graduating class, 80 percent of the students were accepted to college, but 10 percent of those accepted will not go to college.

 Quantity A Quantity B The percent of the students in this class who were accepted to college and who will go to college 70%

A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Re: Ina certain graduating class, 80 percent of the students wer [#permalink]  07 Mar 2017, 15:40
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Expert's post
Explanation

Putting a number for the number of students in the graduating class. When SUPPLYING for a percentage question, it's helpful to use 100.

Number accepted to college = 80 (80% of 100 OR $$0.80 \times 100 = 80$$)

Number of accepted NOT going to college = 8 (10% of 80 OR $$0.10 \times 80 = 8$$)

Number of accepted going to college = 72 (80 – 8 = 72)

The percentage of graduates going to college is 72 out of 100, or 72%.

Hence Quantity A is greater.
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Re: Ina certain graduating class, 80 percent of the students wer [#permalink]  03 Dec 2017, 19:47
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Carcass wrote:

In a certain graduating class, 80 percent of the students were accepted to college, but 10 percent of those accepted will not go to college.

 Quantity A Quantity B The percent of the students in this class 70% who were accepted to college and who will go to college 70%

Quantity A Quantity B

A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.

IN Quantity A "The percent of the students in this class 70% who were accepted to college and who will go to college" what does 70% Mean? really disturbing，this can cause the answer to be A since 70% multiply 0.72% (accept and go to college) is farrrrrrrrr below 70%
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Re: Ina certain graduating class, 80 percent of the students wer [#permalink]  04 Dec 2017, 00:47
I THINK 70% who were accepted to college = 0.7*80 = 56
and who will go to college = 72
SO percent = 56/72 = 77.77% WHICH IS GREATER THEN 70%
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Re: Ina certain graduating class, 80 percent of the students wer [#permalink]  04 Dec 2017, 07:39
arinjay wrote:
I THINK 70% who were accepted to college = 0.7*80 = 56
and who will go to college = 72
SO percent = 56/72 = 77.77% WHICH IS GREATER THEN 70%

I think the whole question is wrong! I found the origin

QA: The percent who were accepted and who will go to college QB: 70%
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Re: Ina certain graduating class, 80 percent of the students wer [#permalink]  04 Dec 2017, 10:04
Expert's post
Peter wrote:
arinjay wrote:
I THINK 70% who were accepted to college = 0.7*80 = 56
and who will go to college = 72
SO percent = 56/72 = 77.77% WHICH IS GREATER THEN 70%

I think the whole question is wrong! I found the origin

QA: The percent who were accepted and who will go to college QB: 70%

Sorry about the error in the question!

Fixed it!
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Re: Ina certain graduating class, 80 percent of the students wer [#permalink]  04 Dec 2017, 11:15
Expert's post
I checked out the stem once again, and it is correct in every word. It is from official power prep software.

regards
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Re: Ina certain graduating class, 80 percent of the students wer [#permalink]  05 Dec 2017, 02:37
Expert's post
Here the best strategy is to read carefully the stem and going step-by-step.

Total students = 100

80 go to college and 20 no.

Of the 80 accepted will not go to the college, which means 8 will not go and we are left with 72 students are accepted and will go to college.

Now 72 is 90 % out of 80.

So, 90% > 70 % (quantity B).

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Re: Ina certain graduating class, 80 percent of the students wer   [#permalink] 05 Dec 2017, 02:37
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