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A certain salesman's yearly income is determined by a base

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A certain salesman's yearly income is determined by a base [#permalink] New post 24 Jan 2012, 23:22
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A certain salesman's yearly income is determined by a base salary plus a commission on the sales he makes during the year. Did the salesman's base salary account for more than half of the salesman's yearly income last year?

(1) If the amount of the commission had been 30 percent higher, the salesman's income would have been 10 percent higher last year.

(2) The difference between the amount of the salesman's base salary and the amount of the commission was equal to 50 percent of the salesman's base salary last year.
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Re: DS - Percentage [#permalink] New post 25 Jan 2012, 02:10
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devinawilliam83 wrote:
Why is the answer to this A and not D?

A certain salesman's yearly income is determined by a base salary plus a commission on the sales he makes during the year. Did the salesman's base salary account for more than half of the salesman's yearly income last year?

Given: {Income}={salary}+{commission}. Question basically asks: is {salary}>{commission}?

(1) If the amount of the commission had been 30 percent higher, the salesman's income would have been 10 percent higher last year --> 1.1({salary}+{commission})={salary}+1.3{commission} --> {salary}=2{commission} --> {salary}>{commission}. Sufficient.

(2) The difference between the amount of the salesman's base salary and the amount of the commission was equal to 50 percent of the salesman's base salary last year --> |{salary}-{commission}|=0.5{salary}, notice that {salary}-{commission} is in absolute value sign ||, meaning that we can have two cases:

A. {salary}-{commission}=0.5{salary} --> 0.5{salary}={commission} --> {salary}>{commission}, thus the answer would be YES;
Or:
A. {commission}-{salary}=0.5{salary} --> 1.5{salary}={commission} --> {salary}<{commission}, thus the answer would be No.
Not sufficient.

Answer: A.

Hope it's clear.
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Re: A certain salesman's yearly income is determined by a base [#permalink] New post 21 Jun 2012, 02:54
please explain why salary - commission is in absoulute value sign?
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Re: A certain salesman's yearly income is determined by a base [#permalink] New post 21 Jun 2012, 03:04
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jaswinder46 wrote:
please explain why salary - commission is in absoulute value sign?


Because if {salary}>{commission} then {salary}-{commission}=0.5{salary}, since 0.5{salary}>0.

But if {salary}<{commission} then {commission}-{salary}=0.5{salary}.

So, the second statement, which says that "the difference between the amount of the salesman's base salary and the amount of the commission was equal to 50 percent of the salesman's base salary last year" should be expressed as |{salary}-{commission}|=0.5{salary}.
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Re: A certain salesman's yearly income is determined by a base [#permalink] New post 10 Jun 2013, 02:52
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Re: DS - Percentage [#permalink] New post 14 Jun 2013, 03:14
Bunuel wrote:
devinawilliam83 wrote:
Why is the answer to this A and not D?

A certain salesman's yearly income is determined by a base salary plus a commission on the sales he makes during the year. Did the salesman's base salary account for more than half of the salesman's yearly income last year?

Given: {Income}={salary}+{commission}. Question basically asks: is {salary}>{commission}?

(1) If the amount of the commission had been 30 percent higher, the salesman's income would have been 10 percent higher last year --> 1.1({salary}+{commission})={salary}+1.3{commission} --> {salary}=2{commission} --> {salary}>{commission}. Sufficient.

(2) The difference between the amount of the salesman's base salary and the amount of the commission was equal to 50 percent of the salesman's base salary last year --> |{salary}-{commission}|=0.5{salary}, notice that {salary}-{commission} is in absolute value sign ||, meaning that we can have two cases:

A. {salary}-{commission}=0.5{salary} --> 0.5{salary}={commission} --> {salary}>{commission}, thus the answer would be YES;
Or:
A. {commission}-{salary}=0.5{salary} --> 1.5{salary}={commission} --> {salary}<{commission}, thus the answer would be No.
Not sufficient.

Answer: A.

Hope it's clear.


Hi Bunnel,
If i do assume that C>S, this will contradict information given in A.

Is this an Official question?
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Re: DS - Percentage [#permalink] New post 14 Jun 2013, 03:16
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cumulonimbus wrote:
Bunuel wrote:
devinawilliam83 wrote:
Why is the answer to this A and not D?

A certain salesman's yearly income is determined by a base salary plus a commission on the sales he makes during the year. Did the salesman's base salary account for more than half of the salesman's yearly income last year?

Given: {Income}={salary}+{commission}. Question basically asks: is {salary}>{commission}?

(1) If the amount of the commission had been 30 percent higher, the salesman's income would have been 10 percent higher last year --> 1.1({salary}+{commission})={salary}+1.3{commission} --> {salary}=2{commission} --> {salary}>{commission}. Sufficient.

(2) The difference between the amount of the salesman's base salary and the amount of the commission was equal to 50 percent of the salesman's base salary last year --> |{salary}-{commission}|=0.5{salary}, notice that {salary}-{commission} is in absolute value sign ||, meaning that we can have two cases:

A. {salary}-{commission}=0.5{salary} --> 0.5{salary}={commission} --> {salary}>{commission}, thus the answer would be YES;
Or:
A. {commission}-{salary}=0.5{salary} --> 1.5{salary}={commission} --> {salary}<{commission}, thus the answer would be No.
Not sufficient.

Answer: A.

Hope it's clear.


Hi Bunnel,
If i do assume that C>S, this will contradict information given in A.

Is this an Official question?


What do you mean by official question? Check the tags. It's MGMAT.
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A certain salesman's yearly income is determined by a base s [#permalink] New post 17 Aug 2013, 02:16
A certain salesman's yearly income is determined by a base salary plus a commission on the sales he makes during the year. Was the salesman's commission larger than his base salary last year?

(1) If the amount of the commission had been 30 percent higher, the salesman's total income (salary plus commission) would have been 10 percent higher last year.

(2) The absolute difference between the amount of the salesman's base salary and the amount of the commission was equal to 50 percent of the salesman's base salary last year.
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Re: A certain salesman's yearly income is determined by a base s [#permalink] New post 17 Aug 2013, 02:19
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Stiv wrote:
A certain salesman's yearly income is determined by a base salary plus a commission on the sales he makes during the year. Was the salesman's commission larger than his base salary last year?

(1) If the amount of the commission had been 30 percent higher, the salesman's total income (salary plus commission) would have been 10 percent higher last year.

(2) The absolute difference between the amount of the salesman's base salary and the amount of the commission was equal to 50 percent of the salesman's base salary last year.


Merging similar topics.
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Re: A certain salesman's yearly income is determined by a base [#permalink] New post 17 Aug 2013, 02:24
Where could I find more of these kind of questions?
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Re: A certain salesman's yearly income is determined by a base [#permalink] New post 17 Aug 2013, 06:36
Could this question be solved by picking numbers?
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Re: DS - Percentage [#permalink] New post 17 Aug 2013, 10:01
Bunuel wrote:
devinawilliam83 wrote:
Why is the answer to this A and not D?

A certain salesman's yearly income is determined by a base salary plus a commission on the sales he makes during the year. Did the salesman's base salary account for more than half of the salesman's yearly income last year?

Given: {Income}={salary}+{commission}. Question basically asks: is {salary}>{commission}?

(1) If the amount of the commission had been 30 percent higher, the salesman's income would have been 10 percent higher last year --> 1.1({salary}+{commission})={salary}+1.3{commission} --> {salary}=2{commission} --> {salary}>{commission}. Sufficient.


I don't know how answer choice A can be sufficient. See example below.

Using your statement:
1.1({salary}+{commission})={salary}+1.3{commission}

1.1 s + 1.1 c = s + 1.3 c ; for sake of simplicity, let's say that salary = 100 and commission = 100

1.1 (100) + 1.1 (100) = 100 + 1.3 (100)

110 + 110 = 100 + 130

220 < 230 ; Insufficient

^^ I'm confused, do we have to take a salary that's greater than commission to solve the question "Is salary > commission?"

Another way I thought of it was...

If instead of plugging in values, is you decide isolate salary (s) and commission (c) using your formula in bold, it would be:

.10 s = .02 c

In this case, for all positive values where salary > commission, it holds true. Sufficient.

Can someone please help explain how Bunuel got salary = 2 commission? What am I doing wrong above? Am I missing something?

~ Im2bz2p345 :)

Last edited by Im2bz2p345 on 17 Aug 2013, 10:16, edited 2 times in total.
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Re: DS - Percentage [#permalink] New post 17 Aug 2013, 10:09
Im2bz2p345 wrote:

Using your statement:
1.1({salary}+{commission})={salary}+1.3{commission}

1.1 s + 1.1 c = s + 1.3 c ; for sake of simplicity, let's say that salary = 100 and commission = 100

1.1 (100) + 1.1 (100) = 100 + 1.3 (100)

110 + 110 = 100 + 130

220 < 230

If instead of plugging in values, you decide isolate salary (s) and commission (c) using your formula, it would be:

.10 s = .02 c

In this case, for all positive values salary > commission.

Can someone please help explain how Bunuel got salary = 2 commission? What am I doing wrong above? Am I missing something?

~ Im2bz2p345 :)

hi,

the above highlited part is wrong.
in that you are assuming salary = comission = 100
if both are equal how can you compare which one is bigger.

let say salary = s
comission =c

1.1(s + c) = s + 1.3 c
1.1s + 1.1c = s + 1.3 c
taking s items one side and c item one side
0.1s = 0.2c
ok now multiply both sides with 10
s = 2c

hope its clear now
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Re: DS - Percentage [#permalink] New post 17 Aug 2013, 10:17
blueseas wrote:
Im2bz2p345 wrote:

Using your statement:
1.1({salary}+{commission})={salary}+1.3{commission}

1.1 s + 1.1 c = s + 1.3 c ; for sake of simplicity, let's say that salary = 100 and commission = 100

1.1 (100) + 1.1 (100) = 100 + 1.3 (100)

110 + 110 = 100 + 130

220 < 230

If instead of plugging in values, you decide isolate salary (s) and commission (c) using your formula, it would be:

.10 s = .02 c

In this case, for all positive values salary > commission.

Can someone please help explain how Bunuel got salary = 2 commission? What am I doing wrong above? Am I missing something?

~ Im2bz2p345 :)

hi,

the above highlited part is wrong.
in that you are assuming salary = comission = 100
if both are equal how can you compare which one is bigger.

let say salary = s
comission =c

1.1(s + c) = s + 1.3 c
1.1s + 1.1c = s + 1.3 c
taking s items one side and c item one side
0.1s = 0.2c
ok now multiply both sides with 10
s = 2c

hope its clear now


Thank you blueseas! I missed that last step of multiplying both sides by 10, shoot - should have realized it before I posted.

Appreciate your quick response.

~ Im2bz2p345 :)
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Re: A certain salesman's yearly income is determined by a base [#permalink] New post 19 Aug 2014, 01:25
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Re: A certain salesman's yearly income is determined by a base   [#permalink] 19 Aug 2014, 01:25
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