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# Data Insights Question of the Day

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Re: Data Insights Question of the Day [#permalink]
ohh are they asking what percentage of 81-90 is of 41-60 students?
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Re: Data Insights Question of the Day [#permalink]
yes
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Re: Data Insights Question of the Day [#permalink]
gotit thanks!
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Re: Data Insights Question of the Day [#permalink]
Hello Folks, Other question which i find interesting
the-all-time-12-greatest-singers-based-on-the-number-of-weeks-their-albums-have-430839.html
I suppose question 2 might not be supported because the table just provides first album by each singer?
We can know the genre of the oldest album but the table does not provide the genre of the latest album?
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Re: Data Insights Question of the Day [#permalink]
Don’t overthink
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Re: Data Insights Question of the Day [#permalink]
2010 is pop?
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Re: Data Insights Question of the Day [#permalink]
but i think the question needs more clarification, the column clearly says first album.

so the latest first album is 2010, but the latest could br 2011 also
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Re: Data Insights Question of the Day [#permalink]
guys is there a way to solve data sufficiency questions more efficiently?
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Re: Data Insights Question of the Day [#permalink]
VarunG1 wrote:
guys is there a way to solve data sufficiency questions more efficiently?

Keep on practicing
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Re: Data Insights Question of the Day [#permalink]
Hi, does anyone wanna try this one? I really have no idea how to tackle it! Thanks in advance!
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Re: Data Insights Question of the Day [#permalink]
hchiaki wrote:
Hi, does anyone wanna try this one? I really have no idea how to tackle it! Thanks in advance!

Hey!
For the first condition, x should be less than 75% of the total number of votes.
Hence, x<0.75(x+y)
From this you’ll get the expression x<3y.

For the second condition, x will become x+1 since one more vote has come in and y will become y-1.
Now, y-1 will be less than 25% since the measure passes now.
Hence, y-1 < 0.25(x+y)
The expression will be 3y<x+4

Now amongst the given options, the pair (19, 7) is the only option that satisfies both the equations. Hope this helps.
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Re: Data Insights Question of the Day [#permalink]
initially y is greater than 25% of total or x+y....y>(1/4)(x+y) or 4y>x+y, that is 3y>x. Also, y has to be much smaller than x as just moving 1 from y to x will make y less than 25% of total..... y-1<(1/4)(x+y) or 3y<x+4....................x<3y<x+4 y can be 4 or 7. If 4, then x<12<x+4.....x cannot be 12, 12<12<16; x cannot be 15, 15<12<19.... So, y=7....x<21<x+4......x cannot be 12, 12<21<16; x cannot be 15, 15<21<19.... But when x=19, then 19<21<23..YES
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Re: Data Insights Question of the Day [#permalink]
chetan2u wrote:
initially y is greater than 25% of total or x+y....y>(1/4)(x+y) or 4y>x+y, that is 3y>x. Also, y has to be much smaller than x as just moving 1 from y to x will make y less than 25% of total..... y-1<(1/4)(x+y) or 3y<x+4....................x<3y<x+4 y can be 4 or 7. If 4, then x<12<x+4.....x cannot be 12, 12<12<16; x cannot be 15, 15<12<19.... So, y=7....x<21<x+4......x cannot be 12, 12<21<16; x cannot be 15, 15<21<19.... But when x=19, then 19<21<23..YES

Hi, thanks for both of your time. Regarding your process, can you please explain me how did you see quickly that y can be 4 or 7 from x<3y<x+4 ?
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Re: Data Insights Question of the Day [#permalink]
Y couldn’t be 12, 15 or 19 otherwise 3y would be too large.
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Re: Data Insights Question of the Day [#permalink]
ahhh!! indeed! Thanks!
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Re: Data Insights Question of the Day [#permalink]
chetan2u wrote:
initially y is greater than 25% of total or x+y....y>(1/4)(x+y) or 4y>x+y, that is 3y>x. Also, y has to be much smaller than x as just moving 1 from y to x will make y less than 25% of total..... y-1<(1/4)(x+y) or 3y<x+4....................x<3y<x+4 y can be 4 or 7. If 4, then x<12<x+4.....x cannot be 12, 12<12<16; x cannot be 15, 15<12<19.... So, y=7....x<21<x+4......x cannot be 12, 12<21<16; x cannot be 15, 15<21<19.... But when x=19, then 19<21<23..YES

I used this approach but felt that it might take some time in exam pressure due to cases comparision
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Re: Data Insights Question of the Day [#permalink]
Hi @Chetan2u, any updates on the verbal DS questions in terms of where to practice and what is the best source for these questions, I am not sure if I am seeing a lot of OG questions that have that flavour? Thanks a lot
Re: Data Insights Question of the Day [#permalink]
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