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Sues monthly earnings consist of a monthly salary and a 4 percent com 10 May 2020, 04:31
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C
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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.




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C
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Sues monthly earnings consist of a monthly salary and a 4 percent com 10 May 2020, 04:50
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When the question say that the July and August salary is same, so the sales would also be same? Please comment
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Sues monthly earnings consist of a monthly salary and a 4 percent com 10 May 2020, 05:20
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abhinav0270
When the question say that the July and August salary is same, so the sales would also be same? Please comment
Show more

As per the question,

Earning = Salary + 4% of (Sales - 2000)

So Salary for both the months is the same but not earnings. Since Earnings are not same hence sales were different.
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Sues monthly earnings consist of a monthly salary and a 4 percent com Updated on: 16 May 2020, 09:39
Originally posted by Archit3110 on 10 May 2020, 06:55.
Last edited by Archit3110 on 16 May 2020, 09:39, edited 2 times in total.
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Sue salary = Monthly earnings + 4/100 * ( x-2000)
let monthly earnings be a and ( x-2000) be S1 for July and ( x-2000) S2 for August
our target is to determine S1-S2
#1Sue’s monthly earnings were $3,620 in July and $3,580 in August.

3620 = a +1/25 * S1--(1)
3580=a+1/25*S2---(2)
subtract 1 from 2
we get
40 = 1/25 * ( S1-S2)
1000 = S1-S2; sufficient
or it can be that no sales in august were made so S2 is 0 ; so S1-S2 cannot be determined ; insufficient

#2
Sue’s monthly salary was $3,500 in July and in August.
value of a ; but total earnings monthly not know ; insufficient
from 1 &2
we know value of a and earnings so s1-s2 can be determined
OPTION C


Bunuel ; please check OA ; it should be A not C

Bunuel
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.




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Sues monthly earnings consist of a monthly salary and a 4 percent com Updated on: 16 May 2020, 09:12
Originally posted by GMATinsight on 10 May 2020, 07:48.
Last edited by GMATinsight on 16 May 2020, 09:12, edited 1 time in total.
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abhinav0270
When the question say that the July and August salary is same, so the sales would also be same? Please comment
Show more

abhinav0270

Please read question stemcarefully

monthly earnings consist of a monthly salary and a 4 percent commission

then question stem further says

Sue’s monthly salary was the same in July as in August

i.e. Fixed salary is same for the two months however Earning may differ due to different sale and thus different commission earned.


So the solution is as mentioned below:

Question: Sales of July - Sales of August = ?

Statement 1: Sue’s monthly earnings were $3,620 in July and $3,580 in August

Case 1: Assuming that the sale made in both July and august was > $2000



Earning = Salary + 4-percent-of- Sales

i.e. \(Earning_{July} - Earning_{August} = (Salary + (4/100)* Sales_{July}) - (Salary + (4/100)* Sales_{August})\)

i.e. \(Earning_{July} - Earning_{August} = (4/100)* Sales_{July} - (4/100)* Sales_{August}\)

\(3620 - 3580 = (4/100)* [Sales_{July} - Sales_{August}]\)

\(40 = (1/25)* [Sales_{July} - Sales_{August}]\)

\(1000 = [Sales_{July} - Sales_{August}]\)

Case 2: But 3580 could be the salary itself assuming that there was no sales made in August above $2000




NOT SUFFICIENT

STatement 2: Sue’s monthly salary was $3,500 in July and in August

NOT SUFFICIENT


Combining the statements

Now we know that salary was 3500 i.e. Earning 3580 in August definitely included sales above $2000 hence Case 2 of statement 1 applies

SUFFICIENT

Answer: Option C
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Sues monthly earnings consist of a monthly salary and a 4 percent com 16 May 2020, 06:57
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abhinav0270
When the question say that the July and August salary is same, so the sales would also be same? Please comment

abhinav0270

Please read question stemcarefully

monthly earnings consist of a monthly salary and a 4 percent commission

then question stem further says

Sue’s monthly salary was the same in July as in August

i.e. Fixed salary is same for the two months however Earning may differ due to different sale and thus different commission earned.


So the solution is as mentioned below:

Question: Sales of July - Sales of August = ?

Statement 1: Sue’s monthly earnings were $3,620 in July and $3,580 in August

Earning = Salary + 4-percent-of- Sales

i.e. \(Earning_{July} - Earning_{August} = (Salary + (4/100)* Sales_{July}) - (Salary + (4/100)* Sales_{August})\)

i.e. \(Earning_{July} - Earning_{August} = (4/100)* Sales_{July} - (4/100)* Sales_{August}\)

\(3620 - 3580 = (4/100)* [Sales_{July} - Sales_{August}]\)

\(40 = (1/25)* [Sales_{July} - Sales_{August}]\)

\(1000 = [Sales_{July} - Sales_{August}]\)

SUFFICIENT

STatement 2: Sue’s monthly salary was $3,500 in July and in August

NOT SUFFICIENT

Answer: Option A
Show more

The correct answer is C. There is a trick there. What if the salary is 3,580, for (1)?
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Sues monthly earnings consist of a monthly salary and a 4 percent com 16 May 2020, 07:25
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Bunuel
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.




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Isn't its written that commission is paid over sales more than 2000?
But if 3500 is salary and 80 is 4% commission. Then the sales is 2000 Top.
Shouldn't the answer be E?

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Sues monthly earnings consist of a monthly salary and a 4 percent com 16 May 2020, 09:13
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abhinav0270
When the question say that the July and August salary is same, so the sales would also be same? Please comment

abhinav0270

Please read question stemcarefully

monthly earnings consist of a monthly salary and a 4 percent commission

then question stem further says

Sue’s monthly salary was the same in July as in August

i.e. Fixed salary is same for the two months however Earning may differ due to different sale and thus different commission earned.


So the solution is as mentioned below:

Question: Sales of July - Sales of August = ?

Statement 1: Sue’s monthly earnings were $3,620 in July and $3,580 in August

Earning = Salary + 4-percent-of- Sales

i.e. \(Earning_{July} - Earning_{August} = (Salary + (4/100)* Sales_{July}) - (Salary + (4/100)* Sales_{August})\)

i.e. \(Earning_{July} - Earning_{August} = (4/100)* Sales_{July} - (4/100)* Sales_{August}\)

\(3620 - 3580 = (4/100)* [Sales_{July} - Sales_{August}]\)

\(40 = (1/25)* [Sales_{July} - Sales_{August}]\)

\(1000 = [Sales_{July} - Sales_{August}]\)

SUFFICIENT

STatement 2: Sue’s monthly salary was $3,500 in July and in August

NOT SUFFICIENT

Answer: Option A

The correct answer is C. There is a trick there. What if the salary is 3,580, for (1)?
Show more


I have changed my solution though it seems unlikely that a sale guy will get salary of $3580 for making a sale below $2000 :cool: :D
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Sues monthly earnings consist of a monthly salary and a 4 percent com 08 Sep 2021, 09:22
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for people having difficulty in understanding why ans is C .

Suppose the sales in aug was 1$ or 1999$ , in each case the commission will be 0 for the month of Aug but the difference in sales figures of July and Aug will vary accordingly . Hence we cant assume the salary to be 3580$ or sales greater than 2000$ for the month of Aug.
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Sues monthly earnings consist of a monthly salary and a 4 percent com 11 Apr 2022, 02:28
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Great explanation GMATinsight. I'm a bit confused as why you keep stating 3580 in Case 2 and in combining 1+2 as question is asking how much greater were her sales in July than in August? Did July earning not matter here or did I miss something? Thanks
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Sues monthly earnings consist of a monthly salary and a 4 percent com 11 Jul 2022, 23:18
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abhinav0270
When the question say that the July and August salary is same, so the sales would also be same? Please comment

mode=viewprofile&un=abhinav0270]abhinav0270[/url]

Please read question stemcarefully

monthly earnings consist of a monthly salary and a 4 percent commission

then question stem further says

Sue’s monthly salary was the same in July as in August

i.e. Fixed salary is same for the two months however Earning may differ due to different sale and thus different commission earned.


So the solution is as mentioned below:

Question: Sales of July - Sales of August = ?

Statement 1: Sue’s monthly earnings were $3,620 in July and $3,580 in August

Earning = Salary + 4-percent-of- Sales

i.e. \(Earning_{July} - Earning_{August} = (Salary + (4/100)* Sales_{July}) - (Salary + (4/100)* Sales_{August})\)

i.e. \(Earning_{July} - Earning_{August} = (4/100)* Sales_{July} - (4/100)* Sales_{August}\)

\(3620 - 3580 = (4/100)* [Sales_{July} - Sales_{August}]\)

\(40 = (1/25)* [Sales_{July} - Sales_{August}]\)

\(1000 = [Sales_{July} - Sales_{August}]\)

SUFFICIENT

STatement 2: Sue’s monthly salary was $3,500 in July and in August

NOT SUFFICIENT

Answer: Option A

The correct answer is C. There is a trick there. What if the salary is 3,580, for (1)?
Show more

Hi Bunuel,

Could you please explain how is ans the question C and not A, coz the 1st statement clearly shows a difference of $1000 between 2 months

Thanks🙌
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Sues monthly earnings consist of a monthly salary and a 4 percent com 12 Nov 2023, 21:38
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abhinav0270
When the question say that the July and August salary is same, so the sales would also be same? Please comment

abhinav0270

Please read question stemcarefully

monthly earnings consist of a monthly salary and a 4 percent commission

then question stem further says

Sue’s monthly salary was the same in July as in August

i.e. Fixed salary is same for the two months however Earning may differ due to different sale and thus different commission earned.


So the solution is as mentioned below:

Question: Sales of July - Sales of August = ?

Statement 1: Sue’s monthly earnings were $3,620 in July and $3,580 in August

Earning = Salary + 4-percent-of- Sales

i.e. \(Earning_{July} - Earning_{August} = (Salary + (4/100)* Sales_{July}) - (Salary + (4/100)* Sales_{August})\)

i.e. \(Earning_{July} - Earning_{August} = (4/100)* Sales_{July} - (4/100)* Sales_{August}\)

\(3620 - 3580 = (4/100)* [Sales_{July} - Sales_{August}]\)

\(40 = (1/25)* [Sales_{July} - Sales_{August}]\)

\(1000 = [Sales_{July} - Sales_{August}]\)

SUFFICIENT

STatement 2: Sue’s monthly salary was $3,500 in July and in August

NOT SUFFICIENT

Answer: Option A

The correct answer is C. There is a trick there. What if the salary is 3,580, for (1)?
Show more

Hi Bunuel! I just attempted this question on GMAT Focus Mock 5 today and the OA given is A (My answer is C btw)
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Sues monthly earnings consist of a monthly salary and a 4 percent com 12 Nov 2023, 23:29
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Hi Bunuel! I just attempted this question on GMAT Focus Mock 5 today and the OA given is A (My answer is C btw)
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Is this a GMAT Focus question? Can you please post a screenshot of it? Thank you!
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Hi Bunuel! I just attempted this question on GMAT Focus Mock 5 today and the OA given is A (My answer is C btw)

Is this a GMAT Focus question? Can you please post a screenshot of it? Thank you!
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Yup it is a mock question! The screenshot is attached below.
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Bunuel
kryinkrumble

Hi Bunuel! I just attempted this question on GMAT Focus Mock 5 today and the OA given is A (My answer is C btw)

Is this a GMAT Focus question? Can you please post a screenshot of it? Thank you!

Yup it is a mock question! The screenshot is attached below.
Show more

Thank you very much! Re-posted it here for fresh discussion: https://gmatclub.com/forum/sue-s-monthl ... 21548.html

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