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What amount did Jean earn from the commission on her sales

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What amount did Jean earn from the commission on her sales  [#permalink]

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New post 18 Dec 2012, 06:28
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Question Stats:

89% (01:11) correct 11% (01:11) wrong based on 1384 sessions

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What amount did Jean earn from the commission on her sales in the first half of 1988 ?

(1) In 1988 Jean's commission was 5 percent of the total amount of her sales.
(2) The amount of Jean's sales in the second half of 1988 averaged $10,000 per month more than in the first half.
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Re: What amount did Jean earn from the commission on her sales  [#permalink]

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New post 18 Dec 2012, 06:35
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What amount did Jean earn from the commission on her sales in the first half of 1988 ?

(1) In 1988 Jean's commission was 5 percent of the total amount of her sales. Nothing about the amount of Jean's sales. Not sufficient.

(2) The amount of Jean's sales in the second half of 1988 averaged $10,000 per month more than in the first half. If the average sales per month in the first half was x, then the total sales for the year was 6x+6(x+10,000). Not sufficient.

(1)+(2) Commission = 0.05*(6x+6(x+10,000)), we need the value of x to answer the question. Not sufficient.

Answer: E.
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Re: What amount did Jean earn from the commission on her sales  [#permalink]

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New post 08 May 2019, 06:53
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Walkabout wrote:
What amount did Jean earn from the commission on her sales in the first half of 1988 ?

(1) In 1988 Jean's commission was 5 percent of the total amount of her sales.
(2) The amount of Jean's sales in the second half of 1988 averaged $10,000 per month more than in the first half.


Target question: What amount did Jean earn from the commission on her sales in the FIRST HALF of 1988 ?

Statement 1: In 1988 Jean's commission was 5 percent of the total amount of her sales.
We don't know her total sales amount in 1988, AND we don't know what happened in the FIRST HALF of 1988
Statement 1 is NOT SUFFICIENT

Statement 2: The amount of Jean's sales in the second half of 1988 averaged $10,000 per month more than in the first half.
We have no information regarding the COMMISSION she receives on sales.
Statement 2 is NOT SUFFICIENT

Statements 1 and 2 combined
There are several scenarios that satisfy BOTH statements. Here are two:
Case a: Jean's sales were $0 in the FIRST half of 1988, and $60,000 in the SECOND half of 1988. 5% of $0 = $0. So, the answer to the target question is Jean's commission was $0 in the FIRST half of 19888
Case b: Jean's sales were $60,000 in the FIRST half of 1988, and $120,000 in the SECOND half of 1988. 5% of $60,000 = $3,000. So, the answer to the target question is Jean's commission was $3000 in the FIRST half of 19888
Since we cannot answer the target question with certainty, the combined statements are NOT SUFFICIENT

Answer: E

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Brent
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Re: What amount did Jean earn from the commission on her sales   [#permalink] 08 May 2019, 06:53
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