GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 23 Jan 2019, 14:11

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

## Events & Promotions

###### Events & Promotions in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
• ### Key Strategies to Master GMAT SC

January 26, 2019

January 26, 2019

07:00 AM PST

09:00 AM PST

Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.
• ### Free GMAT Number Properties Webinar

January 27, 2019

January 27, 2019

07:00 AM PST

09:00 AM PST

Attend this webinar to learn a structured approach to solve 700+ Number Properties question in less than 2 minutes.

# Sue’s monthly earnings consist of a monthly salary and a 4 percent com

Author Message
Manager
Joined: 28 Aug 2010
Posts: 175
Sue’s monthly earnings consist of a monthly salary and a 4 percent com  [#permalink]

### Show Tags

27 Dec 2010, 12:58
1
2
00:00

Difficulty:

55% (hard)

Question Stats:

66% (00:54) correct 34% (01:02) wrong based on 128 sessions

### HideShow timer Statistics

Sue’s monthly earnings consist of a monthly salary and a 4 percent commission on the portion of her monthly sales that is in excess of \$2,000. If Sue’s monthly salary was the same in July as in August, how much greater were her sales in July than in August?

(1) Sue’s monthly earnings were \$3,620 in July and \$3,580 in August.
(2) Sue’s monthly salary was \$3,500 in July and in August.

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Math Expert
Joined: 02 Sep 2009
Posts: 52431
Sue’s monthly earnings consist of a monthly salary and a 4 percent com  [#permalink]

### Show Tags

27 Dec 2010, 13:52
1
Sue’s monthly earnings consist of a monthly salary and a 4 percent commission on the portion of her monthly sales that is in excess of \$2,000. If Sue’s monthly salary was the same in July as in August, how much greater were her sales in July than in August?

{Earnings} = {Fixed salary} + 4/100*{Sales - 2,000};
{Earnings} = {Fixed salary} + 4/100*{Sales} - 80;
{Sales} = 25*{Earnings - Fixed salary + 80}.

Given: {Fixed salary for July} = {Fixed salary for August}.
Question: {Sales for July} - {Sales for August} = 25*{Earnings for July - Fixed salary + 80} - 25*{Earnings for August - Fixed salary + 80} = 25{Earnings for July -Earnings for August}.

So, basically, to answer the question, we need to find the difference between the earnings.

(1) Sue’s monthly earnings were \$3,620 in July and \$3,580 in August. Sufficient.
(2) Sue’s monthly salary was \$3,500 in July and in August. Not sufficient.

_________________
Intern
Joined: 05 Aug 2012
Posts: 18
WE: Project Management (Pharmaceuticals and Biotech)
Re: Sue’s monthly earnings consist of a monthly salary and a 4 percent com  [#permalink]

### Show Tags

20 Dec 2016, 14:43
Bunuel can we assume it is a fixed salary? Does GMAT assume monthly salary = fixed salary? I would expect it to be specified on test day.
Math Expert
Joined: 02 Sep 2009
Posts: 52431
Re: Sue’s monthly earnings consist of a monthly salary and a 4 percent com  [#permalink]

### Show Tags

21 Dec 2016, 00:22
raeann105 wrote:
Bunuel can we assume it is a fixed salary? Does GMAT assume monthly salary = fixed salary? I would expect it to be specified on test day.

The question specifies it perfectly: Sue’s monthly earnings consist of a monthly salary + a 4 percent commission on the portion of her monthly sales that is in excess of \$2,000.
_________________
Intern
Joined: 11 Dec 2017
Posts: 2
Re: Sue’s monthly earnings consist of a monthly salary and a 4 percent com  [#permalink]

### Show Tags

11 Dec 2017, 23:09
Bunuel but what if the fixed salary (monthly salary) was exactly 3,580, which means that there was no commission in August (no monthly sales exceed 2000).
In this case, we will find (1) not sufficient.
Math Expert
Joined: 02 Sep 2009
Posts: 52431
Re: Sue’s monthly earnings consist of a monthly salary and a 4 percent com  [#permalink]

### Show Tags

11 Dec 2017, 23:41
nicktsou wrote:
Bunuel but what if the fixed salary (monthly salary) was exactly 3,580, which means that there was no commission in August (no monthly sales exceed 2000).
In this case, we will find (1) not sufficient.

Why not? Did you try to actually calculate and support your claim with some numbers?

{Fixed salary} = 3,580.

{Sales for July} = 25*{3,620 - 3,580 + 80} = 3,000.
{Sales for August} = 25*{3,580 - 3,580 + 80} = 2,000.

The difference = 1,000.

The same result as from the formula above: 25{Earnings for July -Earnings for August} = 25*(3,620 - 3,580) = 1,000.
_________________
Intern
Joined: 11 Dec 2017
Posts: 2
Re: Sue’s monthly earnings consist of a monthly salary and a 4 percent com  [#permalink]

### Show Tags

11 Dec 2017, 23:55
Bunuel The answer should be C

If the fixed salary is 3,580, which indicates that the sales in August did not exceed 2,000. Thus, (1) is not sufficient to answer the question of "how much greater were her sales in July than in August,".

Because the sales can be any number between 0~2000 in August in this case.

As the result, (2) is also needed to determine whether the sales exceed 2,000 in August. In order to make your equation reasonable and further determine how much greater were the sales in July than in August.

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: Sue’s monthly earnings consist of a monthly salary and a 4 percent com &nbs [#permalink] 11 Dec 2017, 23:55
Display posts from previous: Sort by