[NYCMCBM3]

my sister is doing a practice test and she had this question

but i dont understand how to go about starting

2. If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?

[BMW F22]

5 hours?

sally paints half- 2 hours; John paints half- 3 hours; total of 5. Or you can do (4+6)/2= 5. I think that's the correct answer...

[lopealle]

Originally Posted by BMW E90

5 hours?

sally paints half- 2 hours; John paints half- 3 hours; total of 5. Or you can do (4+6)/2= 5. I think that's the correct answer...

sounds about right

[NYCMCBM3]

ur both wrong

these were the choices

A. 2 hours and 24 minutes
B. 3 hours and 12 minutes
C. 3 hours and 44 minutes
D. 4 hours and 10 minutes
E. 4 hours and 33 minutes

[AMERICUS]

3 hours right? x/4 =1 and x/6 = 1. So (x/4) + (x/6) = 1 => x/3 =1 => x=3. Right?

[NYCMCBM3]

and this is the solution

http://www.algebra.com/algebra/homew...ion.22995.html

google wins again =)

[ghosthi32]

F

[NYCMCBM3]

^ No its A

[BMW F22]

Hmmm interesting answer. I had a feeling it wasn't as easy as I thought (hence the 5 hours?). lol

Very interesting question and answer indeed.

[NYCMCBM3]

^i know what u mean, i tought it was 5 too until i saw the choices

[hks786]

In 1 hour Sally will paint 1/4 and John will paint 1/6.
Therefore in 1 hour they will paint:

1/4 + 1/6
= 6/24 + 4/24
= 10/24
= 5/12

Therefore in 2 hours they will paint 10/12 of the house. For the last 2/12:

For 5/12 it takes 1 hour so for 2/12 we are looking at 2/5 of an hour which is 24 mins. So in total 2 hours and 24 mins.

[ak335]

fawk math

[NYCMCBM3]

Originally Posted by hks786

In 1 hour Sally will paint 1/4 and John will paint 1/6.
Therefore in 1 hour they will paint:

1/4 + 1/6
= 6/24 + 4/24
= 10/24
= 5/12

Therefore in 2 hours they will paint 10/12 of the house. For the last 2/12:

For 5/12 it takes 1 hour so for 2/12 we are looking at 2/5 of an hour which is 24 mins. So in total 2 hours and 24 mins.

did u cheat?????

cuz i posted the answer already aswell check the link in my 3rd or 4th post

[BMWinNorthdakota]

I get a kick out of how math instructors try to apply problems to real world situations that are completely irrelevant to life under normal conditions....

Giggles

[e92justin]

Originally Posted by BMW E90

5 hours?

sally paints half- 2 hours; John paints half- 3 hours; total of 5. Or you can do (4+6)/2= 5. I think that's the correct answer...

Lol. If sally can paint the house "by herself" in 4 hours. then i think it would be even faster with the help of some slow fuck that does it in 6. Its been a couple years since ive dont math so i have no clue in the world how to put equations together anymore.

[NYCMCBM3]

Originally Posted by BMWinNorthdakota

I get a kick out of how math instructors try to apply problems to real world situations that are completely irrelevant to life under normal conditions....

Giggles

+1

[BMW F22]

Originally Posted by e92justin

Lol. If sally can paint the house "by herself" in 4 hours. then i think it would be even faster with the help of some slow fuck that does it in 6. Its been a couple years since ive dont math so i have no clue in the world how to put equations together anymore.

But at the same time you could argue that because John can paint the house "by himself" in 6 hours, with the help of Sally he can do it faster, thus the 5 hours. She helps reduce his time while he drags her down. Since the answers weren't provided there was no way of knowing what kind of math was involved. It could have been as simple as averaging or as "complex" as what the OP posted.

[TK-421]

You would think the answer would've been found pretty quickly with all the Asians on the forum.

[miktrebla09]

Originally Posted by hks786

In 1 hour Sally will paint 1/4 and John will paint 1/6.
Therefore in 1 hour they will paint:

1/4 + 1/6
= 6/24 + 4/24
= 10/24
= 5/12

Therefore in 2 hours they will paint 10/12 of the house. For the last 2/12:

For 5/12 it takes 1 hour so for 2/12 we are looking at 2/5 of an hour which is 24 mins. So in total 2 hours and 24 mins.

why am i not surprised someone not american was able to get the answer?

[Comet]

Originally Posted by TK-421

You would think the answer would've been found pretty quickly with all the Asians on the forum.

lol

I say let Sally paint the second (or third? who knows!) house by herself since she enjoys painting those houses so much

John is obviously disabled as it makes no sense that a man would take longer to do physical labor than a woman, or Sally is a giant.

as a result: a little less than 4hours assuming that that dumb hoe can figure out a way to paint faster after painting a whole fucking house (you learn a few things) whilst John seeks his balls after being emasculated by Sally the giant.



in this picture, Sally emasculates John (bonus points for actually knowing why I picked this picture)

[SilverII]

i can do it in 1 hr

[NYCMCBM3]

^and i can do it in 2,

someone solve, how long it will take us to do it together?