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M24-37

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M24-37 [#permalink]

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New post 16 Sep 2014, 01:22
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B
C
D
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Question Stats:

90% (01:14) correct 10% (01:45) wrong based on 31 sessions

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Re M24-37 [#permalink]

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New post 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.


Answer: C
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Re: M24-37 [#permalink]

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New post 09 Nov 2014, 10:22
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Error in solution?

124.4 - 2.4; instead should be 125.4 - 2.4

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New post 10 Nov 2014, 03:01

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Re: M24-37 [#permalink]

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New post 10 Oct 2015, 13:33
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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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Re: M24-37 [#permalink]

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New post 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.

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Re: M24-37 [#permalink]

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

Can you pls tell me , why is BODMAS rule not used here?

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Re: M24-37 [#permalink]

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New post 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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Re: M24-37 [#permalink]

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New post 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.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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Re: M24-37   [#permalink] 04 Sep 2017, 08:00
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