Homework...... Math Word Problem....... HELP!!!!

[chismbeng01]

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let x = time for eljen to work alone
x - 2 = time for genelle to work alone

rate of work = 1 / time to finish work

rate of eljen = 1 / x
rate of genelle = 1 / (x-2)
rate of work if they do it together = 1 / 4
note: the 1 (numerator) indicates completion of one job (which in this case is painting the room)

solution:
rate of eljen + rate of genelle = rate of work if they do it together
(1 / x) + (1 / (x -2)) = (1/4)
x = 9.12 hours

Eljen can finish painting the room alone for 9.12 hours
while genelle can finish it in 7.12 hours.

mao ni ako solution.... hope makatabang...
comment lang if basin naa ko na overlook...
good luck...

[doom_angel]

i-submit ni ugma?

Taympa lang, before ni i-submit nga solution naa lang ko pangutana... clarification lang ha? sorri kaau baning kung magpa clarify ko sa imong solution.

- Kun ang isa ka trabaho tabangan ug duha ka tawo, dba madali ra ug ka human ang trabaho?

- Kun si Genelle ug Eljen mag trabaho 4 hours ra nila trabahoon ang pag paint sa room... so kung si Eljen lang isa mag trabaho, dba expected nga mas dugay pa o labaw pa sa 4hours niya trabahoon? ... unya kay ani nga solution kay 3 hours ra lagi niya trabahoon no?

agree go sa comment ni Sir Bishop.



agree sad ko sa solution ni Sir Chism.....

let x = time for eljen to work alone
x - 2 = time for genelle to work alone

rate of work = 1 / time to finish work

rate of eljen = 1 / x
rate of genelle = 1 / (x-2)
rate of work if they do it together = 1 / 4
note: the 1 (numerator) indicates completion of one job (which in this case is painting the room)

solution:
rate of eljen + rate of genelle = rate of work if they do it together
(1 / x) + (1 / (x -2)) = (1/4)
x = 9.12 hours

Eljen can finish painting the room alone for 9.12 hours
while genelle can finish it in 7.12 hours.

mao ni ako solution.... hope makatabang...
comment lang if basin naa ko na overlook...
good luck...

[emmhai]

unsaun kaha pag kat-on ana niya kung kita mu himo sa iya assynment?

learn for yourself kid. kaw luoy ig college nimo. 4th yr na ka nya wa ka kbao ana

[omicgavp]

i-submit ni ugma?

Taympa lang, before ni i-submit nga solution naa lang ko pangutana... clarification lang ha? sorri kaau baning kung magpa clarify ko sa imong solution.

- Kun ang isa ka trabaho tabangan ug duha ka tawo, dba madali ra ug ka human ang trabaho?

- Kun si Genelle ug Eljen mag trabaho 4 hours ra nila trabahoon ang pag paint sa room... so kung si Eljen lang isa mag trabaho, dba expected nga mas dugay pa o labaw pa sa 4hours niya trabahoon? ... unya kay ani nga solution kay 3 hours ra lagi niya trabahoon no?

Kana imong gipasabot bai kay usa na ka nonlinear system. Kani nga system di mosunod sa superposition principle. Huna-hunaa lang nga sa nonlinear system kay "the whole is not equal to the sum of its parts."
Kaning sa problem kay high school algebra mani, mao na atong giassume nga kini usa ka linear system ug mosatisfy siya sa superposition principle. So "the whole is equal to the sum of its parts." Ang variables sad ani niya kay independent mao nang wala naka-apekto ang trabaho ni Genelle sa kang Eljen and vice versa. BTW, agree ko sa answer ni baning ani nga problem.

[Bigben2007]

mao jud. agree ko ni emmhai. Siya ra jud ang looy ug college. Basin mawala na ang istorya.net inig college niya ug wala nay mo solve.

[bishop__]

ahh... hehehe... sori kaau bai omicgavp, pero naay hint sa gihatag nga problem nga problem kuno ni nga gamita ug Quadratic Equation.

gusto lang ko mag hatag ug tabang indirectly kay para naay makat-onan ang nag post.

sa nag post ani, naa ra ang formula, naa diri ang explanation kung gi unsa ni bai chismbeng01 pag come up sa iyang formula: Lesson HOW TO Solve Rate of Work (painting, pool filling, etc) Problems

Kana imong gipasabot bai kay usa na ka nonlinear system. Kani nga system di mosunod sa superposition principle. Huna-hunaa lang nga sa nonlinear system kay "the whole is not equal to the sum of its parts."
Kaning sa problem kay high school algebra mani, mao na atong giassume nga kini usa ka linear system ug mosatisfy siya sa superposition principle. So "the whole is equal to the sum of its parts." Ang variables sad ani niya kay independent mao nang wala naka-apekto ang trabaho ni Genelle sa kang Eljen and vice versa. BTW, agree ko sa answer ni baning ani nga problem.

[mokikoy]

Genelle and Eljen can paint a room together in 4 hours. Working alone, Genelle can paint the room in two hours less than Eljen can. Find how long it takes Eljen to paint the room alone.

x = number of hours that Eljen will take in painting the room alone
x-2 = number of hours that Genelle will take in painting the room alone

4 = x + ( x-2 )
4 = 2x - 2
4 + 2 = 2x
6 = 2x ; both should be divided by 2
x = 3 hours

it takes 3 hours for Eljen to finish painting the room...


p.s. unsa ka na year sa hs?

tsk3x!!! ma turn on jud kog mga babae nga bryt oi!! ahahahah!! ^_^ bilib au ko sa math skills nimo ma'am... makes me remember of my x... bryt pd au 2g math..

i-submit ni ugma?

Taympa lang, before ni i-submit nga solution naa lang ko pangutana... clarification lang ha? sorri kaau baning kung magpa clarify ko sa imong solution.

- Kun ang isa ka trabaho tabangan ug duha ka tawo, dba madali ra ug ka human ang trabaho?

- Kun si Genelle ug Eljen mag trabaho 4 hours ra nila trabahoon ang pag paint sa room... so kung si Eljen lang isa mag trabaho, dba expected nga mas dugay pa o labaw pa sa 4hours niya trabahoon? ... unya kay ani nga solution kay 3 hours ra lagi niya trabahoon no?

as for u bro, naa pd ka point.. there's something wrong with baning's solution?

[mokikoy]

unsaun kaha pag kat-on ana niya kung kita mu himo sa iya assynment?

learn for yourself kid. kaw luoy ig college nimo. 4th yr na ka nya wa ka kbao ana

ahahaha!! pero mao jud ning pinaka sakto sa tanan!! ^_^

m also working as a college teacher right now and i've noticed that there are some (not all) students who graduate high school and are not really that prepared for college.. even the way they use their english communication skills.. makes me wonder why or how..

is it a teacher factor? or the students themselves?

[devolebsdog]

let x = time for eljen to work alone
x - 2 = time for genelle to work alone

rate of work = 1 / time to finish work

rate of eljen = 1 / x
rate of genelle = 1 / (x-2)
rate of work if they do it together = 1 / 4
note: the 1 (numerator) indicates completion of one job (which in this case is painting the room)

solution:
rate of eljen + rate of genelle = rate of work if they do it together
(1 / x) + (1 / (x -2)) = (1/4)
x = 9.12 hours

Eljen can finish painting the room alone for 9.12 hours
while genelle can finish it in 7.12 hours.

mao ni ako solution.... hope makatabang...
comment lang if basin naa ko na overlook...
good luck...

I think this is the right answer..
My answer is close to this. naglabad lang akong ulo kay gi try nakog solve nga naay minutes og seconds.. haha.. lisud jud ning wa nay exercise ang utok dah.. hehe

[cebu.opportunities]

Genelle and Eljen can paint a room together in 4 hours. Working alone, Genelle can paint the room in two hours less than Eljen can. Find how long it takes Eljen to paint the room alone.

x = number of hours that Eljen will take in painting the room alone
x-2 = number of hours that Genelle will take in painting the room alone

4 = x + ( x-2 )
4 = 2x - 2
4 + 2 = 2x
6 = 2x ; both should be divided by 2
x = 3 hours

it takes 3 hours for Eljen to finish painting the room...


p.s. unsa ka na year sa hs?

This solution is applicable kung ang imo gipangita ky number of hours Eljen spent in painting the room when helped by Genelle.
" Genelle can paint the room in two hours less than Eljen can."
so number of hours Genelle spent in painting the room with Eljen ky-------------> 3 hours - 2 hours = 1 hour

Working together, they finished it in 4 hours
3 hours ky Eljen + 1 hour ky Genelle = 4 hours

aw, sakto ba?

let x = time for eljen to work alone
x - 2 = time for genelle to work alone

rate of work = 1 / time to finish work

rate of eljen = 1 / x
rate of genelle = 1 / (x-2)
rate of work if they do it together = 1 / 4
note: the 1 (numerator) indicates completion of one job (which in this case is painting the room)

solution:
rate of eljen + rate of genelle = rate of work if they do it together
(1 / x) + (1 / (x -2)) = (1/4)
x = 9.12 hours

Eljen can finish painting the room alone for 9.12 hours
while genelle can finish it in 7.12 hours.

mao ni ako solution.... hope makatabang...
comment lang if basin naa ko na overlook...
good luck...

murag mao ni sakto.