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# M24-37

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Math Expert
Joined: 02 Sep 2009
Posts: 54544

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16 Sep 2014, 01:22
00:00

Difficulty:

5% (low)

Question Stats:

89% (01:00) correct 11% (01:07) wrong based on 139 sessions

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What is $$34\%$$ of $$(125.4 - \frac{12}{5})$$?

A. 36.82
B. 37.62
C. 41.82
D. 43.82
E. 45.62

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Math Expert
Joined: 02 Sep 2009
Posts: 54544

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16 Sep 2014, 01:22
Official Solution:

What is $$34\%$$ of $$(125.4 - \frac{12}{5})$$?

A. 36.82
B. 37.62
C. 41.82
D. 43.82
E. 45.62

$$(125.4 - \frac{12}{5}) = 125.4 - 2.4 = 123$$. 34% of 123 is a little more than $$\frac{123}{3} = 41$$. Among the listed choices, C is the best fit.

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Intern
Joined: 03 Aug 2014
Posts: 17
Schools: Stanford '18

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09 Nov 2014, 10:22
1
Error in solution?

124.4 - 2.4; instead should be 125.4 - 2.4
Math Expert
Joined: 02 Sep 2009
Posts: 54544

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10 Nov 2014, 03:01
marshallbrm wrote:
Error in solution?

124.4 - 2.4; instead should be 125.4 - 2.4

Typo edited. Thank you.
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Joined: 29 Sep 2015
Posts: 3

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10 Oct 2015, 13:33
1
Bunuel, possibly another typo, the answer 125.4 - 2.4 = 123 (not 122), and 123/3 = 41 (not 122/3 = 41).
Math Expert
Joined: 02 Sep 2009
Posts: 54544

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11 Oct 2015, 06:06
TaiwanTaiwan wrote:
Bunuel, possibly another typo, the answer 125.4 - 2.4 = 123 (not 122), and 123/3 = 41 (not 122/3 = 41).

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Thank you. Edited.
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Intern
Joined: 20 Aug 2015
Posts: 6

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07 Feb 2016, 03:29
I think this is a poor-quality question and I agree with explanation. If you use the PEMDAS formula, you will get a different solution.
You can make the problem clearer if you set brackets.
Intern
Joined: 27 Nov 2015
Posts: 2

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07 Nov 2016, 09:30
[quote="Bunuel"]

Can you pls tell me , why is BODMAS rule not used here?
Manager
Joined: 12 Jun 2016
Posts: 214
Location: India
WE: Sales (Telecommunications)

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04 Sep 2017, 06:58
Hello,

I have a question on this.

Why do we first Subtract and then take the percentage? I mean - since there are no brackets, why is it that we should not take percentage first and THEN subtract the resultant?

Hope I am able to clearly state my question.

Bunuel wrote:
What is $$34\%$$ of $$125.4 - \frac{12}{5}$$?

A. 36.82
B. 37.62
C. 41.82
D. 43.82
E. 45.62

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My Best is yet to come!
Math Expert
Joined: 02 Sep 2009
Posts: 54544

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04 Sep 2017, 08:00
susheelh wrote:
Hello,

I have a question on this.

Why do we first Subtract and then take the percentage? I mean - since there are no brackets, why is it that we should not take percentage first and THEN subtract the resultant?

Hope I am able to clearly state my question.

Bunuel wrote:
What is $$34\%$$ of $$125.4 - \frac{12}{5}$$?

A. 36.82
B. 37.62
C. 41.82
D. 43.82
E. 45.62

I thought it was quite obvious that $$125.4 - \frac{12}{5}$$ is one expression. Still added brackets to avoid confusion.
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Re: M24-37   [#permalink] 04 Sep 2017, 08:00
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# M24-37

Moderators: chetan2u, Bunuel

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