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# profit and loss

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Intern
Joined: 30 Mar 2012
Posts: 3

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30 Mar 2012, 07:54
Hello

Can some one help with this sum please.

a teacher's salary was \$4400 after an increase of 10%. what would her salary have been if he had receive an increase of 15%.

how do you work this ...

Kudos [?]: [0], given: 0

Manager
Joined: 22 Feb 2012
Posts: 93

Kudos [?]: 25 [0], given: 25

Schools: HBS '16
GMAT 1: 740 Q49 V42
GMAT 2: 670 Q42 V40
GPA: 3.47
WE: Corporate Finance (Aerospace and Defense)

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30 Mar 2012, 08:36
Quote:
Hello

Can some one help with this sum please.

a teacher's salary was \$4400 after an increase of 10%. what would her salary have been if he had receive an increase of 15%.

how do you work this ...

Salary prior to 10% increase = x

so 1.1x = 4400

solving for x,
x= 4000

1.15x = 4600

Kudos [?]: 25 [0], given: 25

Intern
Joined: 30 Mar 2012
Posts: 3

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30 Mar 2012, 09:09
wait how you got 1.1 not following

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Intern
Joined: 30 Mar 2012
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30 Mar 2012, 09:13
I got 1.1=4000
but if x=1.15
1.15x=4000
x=4000/1.15
x=3478

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Manager
Joined: 19 Mar 2012
Posts: 171

Kudos [?]: 54 [0], given: 13

Location: United States
Concentration: Finance, General Management
GMAT 1: 750 Q50 V42
GPA: 3.69
WE: Analyst (Mutual Funds and Brokerage)

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02 Apr 2012, 21:18
SmileyKing wrote:
Hello

Can some one help with this sum please.

a teacher's salary was \$4400 after an increase of 10%. what would her salary have been if he had receive an increase of 15%.

how do you work this ...

Let me see if I can break this out into some steps:

You know what the teacher's salary is after a 10% increase. What you need to solve for is the teacher's salary before the 10% increase. So the equation is set up like this:

(1.10)(x) = \$4400, where x=teacher's salary before the 10% increase

Solving for x, you get x = \$4000

Now the question asks for what the teacher's salary is after a 15% increase. At this point you know the original salary (solved above), so the equation looks like:

New Salary = (1.15)(4000)
New Salary = \$4600

You used the equation 1.15x = \$4000, which is saying that a 15% increase to the salary of x is \$4000. You have your terms mixed up.

Kudos [?]: 54 [0], given: 13

Intern
Joined: 29 Apr 2013
Posts: 1

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03 Nov 2016, 22:29
Easiest way to solve :
110% = 4400
=> 115% = (4400*115)/110 = 4600

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Re: profit and loss   [#permalink] 03 Nov 2016, 22:29
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# profit and loss

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