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Sanae Hanekoma
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 Posted: Sat Nov 29, 2008 10:52 pm Post subject: {+rep} math problem |
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It is not that hard... I just said that so people would look. Okay, here is the problem:
A teacher usually divides his class into six groups of "n" students each. However, on Monday, three of the students were absent, so the teacher divided the remaining students into seven groups of "m" students each. On Tuesday, four students were absent, so he went back to "n" students per group, but there were only five groups. How many students are in the class?
Please explain your answer thoroughly!
answer that bish for my rep
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| Posted: Sat Nov 29, 2008 10:55 pm Post subject: |
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6n=7m+3=5n+4
n=4
6*4=24
24 students
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Sanae Hanekoma
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| Posted: Sat Nov 29, 2008 10:56 pm Post subject: |
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| AQW wrote: | 6n=7m+3=5n+4
n=4
6*4=24
24 students |
OMG D: thats a rep...
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korby
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| Posted: Sat Nov 29, 2008 11:03 pm Post subject: |
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System of 2 equations.. algebra 2 shit.. blah blah
6n - 3 = 7m
6n - 4 = 5n simplified----> n - 4 = 0
6n - 3 = 7m
n - 4 = 0 multiply the bottom equation by -6
6n - 3 = 7m
-6n + 24 = 0 add that shit
21 = 7m
m = 3 Plug that into the original equation
6n - 3 = 7(3)
6n = 24
n = 4 Plug that into the beginning equation
6(4)
NUMBER OF STUDENTS IS 24 BITCH.
aiosdfjiosdaf you beat me
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Last edited by korby on Sat Nov 29, 2008 11:04 pm; edited 1 time in total |
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Sanae Hanekoma
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| Posted: Sat Nov 29, 2008 11:04 pm Post subject: |
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| korby wrote: | System of 2 equations.. algebra 2 shit.. blah blah
6n - 3 = 7m
6n - 4 = 5n simplified----> n - 4 = 0
6n - 3 = 7m
n - 4 = 0 multiply the bottom equation by -6
6n - 3 = 7m
-6n + 24 = 0 add that shit
21 = 7m
m = 3 Plug that into the original equation
6n - 3 = 7(3)
6n = 24
n = 3 Plug that into the beginning equation
6(3)
NUMBER OF STUDENTS IS 18 BITCH. |
no.. its 24..
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korby
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| Posted: Sat Nov 29, 2008 11:04 pm Post subject: |
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I forgot what 6 times 4 was sorry.
I tried to write it out nice and pretty for you.. guess it wasn't pretty enough 
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AquariiSong
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| Posted: Sat Nov 29, 2008 11:06 pm Post subject: |
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brain hurts from equation *Head explodes*
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korby
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| Posted: Sat Nov 29, 2008 11:06 pm Post subject: |
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| AQW wrote: | 6n=7m+3=5n+4
n=4
6*4=24
24 students |
If this is for school, you're going to have to use my answer because that equation isn't legit.
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| Posted: Sat Nov 29, 2008 11:07 pm Post subject: |
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| Nothing wrong with my equation. In fact, you only need 6n=5n+4. There's no need to solve for m, unless it asked for it.
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korby
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| Posted: Sat Nov 29, 2008 11:09 pm Post subject: |
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Math teachers like it that way.
It gets them off..
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[SPW]Killamoocow
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| Posted: Sat Nov 29, 2008 11:18 pm Post subject: |
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and what grade is this? 6th?
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AdamWest
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| Posted: Sat Nov 29, 2008 11:19 pm Post subject: Re: {+rep} math problem |
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| PaperCut ownz you wrote: | It is not that hard... I just said that so people would look. Okay, here is the problem:
A teacher usually divides his class into six groups of "n" students each. However, on Monday, three of the students were absent, so the teacher divided the remaining students into seven groups of "m" students each. On Tuesday, four students were absent, so he went back to "n" students per group, but there were only five groups. How many students are in the class?
Please explain your answer thoroughly!
answer that bish for my rep |
Well, this is the thing that will cause the human race to end. Lazy little 13 year olds who don't do their math and get shitty jobs.
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Hollowlchigo
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| Posted: Sat Mar 21, 2009 2:41 am Post subject: |
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| My head is starting to hurt
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Steve03416634
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| Posted: Sat Mar 21, 2009 4:29 am Post subject: Re: {+rep} math problem |
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| Sanae Hanekoma wrote: | It is not that hard... I just said that so people would look. Okay, here is the problem:
A teacher usually divides his class into six groups of "n" students each. However, on Monday, three of the students were absent, so the teacher divided the remaining students into seven groups of "m" students each. On Tuesday, four students were absent, so he went back to "n" students per group, but there were only five groups. How many students are in the class?
Please explain your answer thoroughly!
answer that bish for my rep |
YOU CAN ALSO DO THIS THE EASY WAY.
FIRST: 6*n=TOTAL
SECOND: 5*n+4=TOTAL
6*n=5*n+4 => -5*n => n=4
4*6=24.
Ignore the M bullshit, it's only confusing you.
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