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Quant Question of the Day Chat

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divyam3433647
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 00:13
i have completed understanding the concepts and practiced good amount of questions in verbal but i am not able to focus throughout the section so can anyone help me out regarding how to go about preparation in the verbal
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Bunuel
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 01:35
Expert Reply

Problem Solving Butler: September 2024
September 27PS 1PS 2
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Bunuel
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 01:36
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Critical Reasoning Butler: September 2024
September 27CR 1CR 2
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Bunuel
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 01:38
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Data Sufficiency Butler: September 2024
September 27DS 1DS 2
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Matthyrou
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 03:46
answers for ds are both c, are they?
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agnee
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 04:46
Yes

1/D+1/E=1/t ,
Q: is E/2<3 ?

1) t<3 I.e 1/t>1/3 not suff alone
2) D>360min=6hr
I.e 1/D<1/6 I.e -1/D>-1/6
not suff alone

Combining 1)+ 2) :
1/E=1/t-1/D >1/3-1/6=1/6
Ie E<6
Ie E/2< 3
Sufficient
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satish_sahoo
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 05:15
Hi, a silly question may be but please answer, if I practice all the GMAT Prep(focus) questions from the question bank here, am I actually solving all the questions from the official mocks too?

Apologies, i think i posted in the wrong chat group
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kurien
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 05:21
Yes, hence this is not a good idea else you will have not have sufficient material to practice
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Rosyy2024
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 07:12
In a class of 40 students, the average score on a math test was 58. If 10 students scored above 70, and the remaining students scored below 50, what is the average score of the 10 students who scored above 70?

A) 82
B) 85
C) 88
D) 90
E) 92
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agnee
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 07:33
If you take avg score of 30 students is x and x<50 ,
Then total score of 10 top scorers=58*40-30x=2320-30x>2320-30*50=820
I.e average of top 10 students >82
Now taking x=49,
Average of top 10 students=85

Can u pls think of a better way?
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DevalGandhi
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 07:38
10 students scored above 70
And, 30 scored below 50

30 could have a max score of 49
Hence, the difference from avg score of 58 is 9 marks (i.e 58-49)
The total shortfall of the score of 30 students to make an average of 58 marks will be 270 marks (9 marks each of 30 students)

This shortfall of 270 will be filled by 10 students who scored above 70
So, avg score of students above 70 will be
= 58 + (270/10)
= 58 + 27
= 85
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divynshpGMAT
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 07:45
This question is not worded properly.
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agnee
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 07:49
DevalGandhi
10 students scored above 70
And, 30 scored below 50

30 could have a max score of 49
Hence, the difference from avg score of 58 is 9 marks (i.e 58-49)
The total shortfall of the score of 30 students to make an average of 58 marks will be 270 marks (9 marks each of 30 students)

This shortfall of 270 will be filled by 10 students who scored above 70
So, avg score of students above 70 will be
= 58 + (270/10)
= 58 + 27
= 85
This seems okayish but I am just thinking why should we try maximising the average of 30 people and then minimising for 10 people and get the answer? Any strong intuition behind doing that?
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Subham9141
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 07:50
Sorry 85 my mistake did the wrong subtraction
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jeffn
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 08:00
September 27th Quant Question of the Day







Answer and Explanation | Subscribe via E-mail, Forum, Instagram, or YouTube
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agnee
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 08:30
Rosyy2024
In a class of 40 students, the average score on a math test was 58. If 10 students scored above 70, and the remaining students scored below 50, what is the average score of the 10 students who scored above 70?

A) 82
B) 85
C) 88
D) 90
E) 92
More importantly the average can be 46 or 48 also.. then what?
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agnee
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 08:43
It can not definitely say what the average can be .. so wrong wording!
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kalpak8
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 09:05
jeffn
September 27th Quant Question of the Day







Answer and Explanation | Subscribe via E-mail, Forum, Instagram, or YouTube
option D - 62 as it is 2*31
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TheVDR
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   27 Sep 2024, 11:11
agnee
It can not definitely say what the average can be .. so wrong wording!
85, 88, 91, 94...keep on adding 3 till 232...there are 50 possible answers to the question....The question should say "which of these is correct

correct"? Or something like the smallest possible.....
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jeffn
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Re: Quant Question of the Day Chat [#permalink] Quant Question of the Day Chat   28 Sep 2024, 08:00
September 28th Quant Question of the Day







Answer and Explanation | Subscribe via E-mail, Forum, Instagram, or YouTube
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Re: Quant Question of the Day Chat [#permalink]
28 Sep 2024, 08:00
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