Please Scroll Down to See Forums Below
napsgear
genezapharmateuticals
domestic-supply
puritysourcelabs
UGL OZ
UGFREAK
napsgeargenezapharmateuticals domestic-supplypuritysourcelabsUGL OZUGFREAK

I've need some help with this math problem

P

pdaddy

New member
It's from a take home test of a friends brother

It takes Joe 40 hours to fill up his pool using his hose and it takes Dan 60 hours to fill up the same size pool. How long would it take Joe to fill up his pool using both hoses?
 
pdaddy said:
It's from a take home test of a friends brother

It takes Joe 40 hours to fill up his pool using his hose and it takes Dan 60 hours to fill up the same size pool. How long would it take Joe to fill up his pool using both hoses?
Click to expand...

Who said Joe could have Dan's hose?
 
  • Like
Reactions: PBR
joe's rate:

40 hours x joe's rate gal/hr = p gallons

joe's rate = p/40 gallons per hour (call it x)
where p = size of the pool in gallons

dan's rate = p/60 gallons per hour (call it y)

combined rate = x + y gal/hr

(x+y) gal/hour x Z hours = p gal
where Z = combined time to fill

(p/40 + p/60)Z = p

Z = p / (p/40 + p/60)

Z = p / (5p / 120)

Z = 24 hours
 
chilidog0425 said:
joe's rate:

40 hours x joe's rate gal/hr = p gallons

joe's rate = p/40 gallons per hour (call it x)
where p = size of the pool in gallons

dan's rate = p/60 gallons per hour (call it y)

combined rate = x + y gal/hr

(x+y) gal/hour x Z hours = p gal
where Z = combined time to fill

(p/40 + p/60)Z = p

Z = p / (p/40 + p/60)

Z = p / (5p / 120)

Z = 24 hours
Click to expand...

one last part of the equation i forgot ------


pdiddy = giving chilidog karma
 
i don't see what is wrong with my solution

maybe i need to look at the best ass poll thread real quick to get into a zen state of mind
 
Chilidog, since the problem gave you no information regarding gallons in the pool you shouldn't even bother bringing gallons into your equation. I don't see what you meant by adding "40 gallons per hour" and "60 gallons per hour" to the equation.
 
chilidog0425 said:
joe's rate:

40 hours x joe's rate gal/hr = p gallons

joe's rate = p/40 gallons per hour (call it x)
where p = size of the pool in gallons

dan's rate = p/60 gallons per hour (call it y)

combined rate = x + y gal/hr

(x+y) gal/hour x Z hours = p gal
where Z = combined time to fill

(p/40 + p/60)Z = p

Z = p / (p/40 + p/60)

Z = p / (5p / 120)

Z = 24 hours
Click to expand...


i used gallons because that is a unit of volume that might typically be used to describe the capacity of a pool. we could use milliliters if you prefer.

joe's rate is:

the capacity of the pool, p (i used gallons as the unit)
------------------------------------------------------- gal/hr
40



we're not averaging the hose flow rates, they are added together as the hoses are both running simultaneously at different rates.
 
chilidog0425 said:
i used gallons because that is a unit of volume that might typically be used to describe the capacity of a pool. we could use milliliters if you prefer.

joe's rate is:

the capacity of the pool, p (i used gallons as the unit)
------------------------------------------------------- gal/hr
40



we're not averaging the hose flow rates, they are added together as the hoses are both running simultaneously at different rates.
Click to expand...

I prefer oilfield bbls. and also need hydrostatic pressure for every foot please.

Rsquared is grounded and will be unable to respond.
 
chilidog0425 said:
so what does pwned mean?
Click to expand...

The verb to pwn (past tense: pwned, pwnd, pwn'd, pwnt, pooned) as used by the Internet gaming subculture, means to beat or dominate an opponent. While it probably originated as a typing error of the word own, it is now used intentionally by many members of the subculture. The term has become so ubiquitous in Internet circles that it is often used outside of gaming contexts; for example, "He just got pwned in that debate" or "The hunters pwned that bear."
 
chilidog0425 said:
assuming the vapor pressure of water is.........


so what does pwned mean?
Click to expand...

Assuming the generally accepted 8.33 lb/gl. of water.

Read about pwned below. Although it has also been explained to me as coming from a chess as in pawned.
It is geek speak for "owning" someone, in a very clever spelling. LOL.
 
chilidog0425 said:
assuming the vapor pressure of water is.........


so what does pwned mean?
Click to expand...


43258.jpg
 
chilidog0425 said:
joe's rate:

40 hours x joe's rate gal/hr = p gallons

joe's rate = p/40 gallons per hour (call it x)
where p = size of the pool in gallons

dan's rate = p/60 gallons per hour (call it y)

combined rate = x + y gal/hr

(x+y) gal/hour x Z hours = p gal
where Z = combined time to fill

(p/40 + p/60)Z = p

Z = p / (p/40 + p/60)

Z = p / (5p / 120)

Z = 24 hours
Click to expand...

Joe says this sucks= call it FT (fuck this)
Dan says my hose is bigger= call it JAI (joe's an idiot)

FT+JAI=JRDH (joe recons dans hose)
JRDH + FT= DFNW (dan's fucked w/ no water)
DFNW+JRDH= JHN (joe's happy now)
JHN+DFNW= DWNCIHP (dan with no chicks in his pool)
DWNCIHP+ JHN= DSJ (dan shoots joe)

joe is dead because he combined two hoses...not good.
 
mountain muscle said:
Assuming the generally accepted 8.33 lb/gl. of water.

Read about pwned below. Although it has also been explained to me as coming from a chess as in pawned.
It is geek speak for "owning" someone, in a very clever spelling. LOL.
Click to expand...

I thought water was 7lbs/gal? I know beer is 5 lbs/gal.
 
80 hours
 
err no 80 hours to fill both pools

20 hours for his pool
 
My goodness... PBR and mountain muscle sure know how to take a math problem and turn it into quite the pool party, ya know? Are you guys natural comedians?
 
rocky_road said:
My goodness... PBR and mountain muscle sure know how to take a math problem and turn it into quite the pool party, ya know? Are you guys natural comedians?
Click to expand...

i cant even figure out how many slices of bread a toaster holds. :rolleyes:
 
rocky_road said:
My goodness... PBR and mountain muscle sure know how to take a math problem and turn it into quite the pool party, ya know? Are you guys natural comedians?
Click to expand...

You stalking me now? I thought I grounded you?

Or you prefer the spankings?
 
mountain muscle said:
I work in BBLPM.

When you coming to Colorado to let me wreck your bike? er ride. Damnit!
Click to expand...

yeah thats what usually happens....thx for the invite tho.
i'll bet CO is awesome this time of year.
 
NickyE3 said:
LMAO!!
Click to expand...

Does the humour lie in the fact that I'm taking this problem so seriously? I can't help it; I'm still being "graded" every day and i'm not in the real world yet where you learn to put shit in perspective and find alternative ways to deal with the problem.
 
mountain muscle said:
Yeah, I'm going to have to ask you to go ahead and see post #3.

Great.
Click to expand...
I looked at it quickly in my head and subtracted the 20% instead of adding it
 
rocky_road said:
Does the humour lie in the fact that I'm taking this problem so seriously? I can't help it; I'm still being "graded" every day and i'm not in the real world yet where you learn to put shit in perspective and find alternative ways to deal with the problem.
Click to expand...

im not in the real world yet either
 
PBR said:
yeah thats what usually happens....thx for the invite tho.
i'll bet CO is awesome this time of year.
Click to expand...


Colorado is awesome all year. I might have a bike by spring though. No way in hell would I ride another man's bike.

You would have a great time cruising the mountain roads.
 
I found 6 dollars in my sweatpants
and I'm going to combine that 6 with the 4 I found in my bronco
and buy 144ozs of lite beer
 
Screenshot.jpg


Same system of equations that Chilidog offered, just in an easier to read format. Had to take a screenshot of my text editor because vbulletin doesn't allow TEX formatting.

dV = Change in pool volume.

dt = Change in time.
 
I figure out most problems on the quick
typically an exact answer isn't necessary
you figure what you need to know fast w/o going to the calculator
 
who used a calculator?

if you need one to add partial fractions, then ummm.......yeah

also redguru -
can i have my stapler back?
 
I would have done it the same way that chillidog did it. This problem can be a little tricky because you assume it would be a two second answer but you do need to do a little math.
 
how far apart does Joe Live from Dan? And is there a kink in the hose?
 
chilidog0425 said:
one last part of the equation i forgot ------


pdiddy = giving chilidog karma
Click to expand...

thanks to all for the k hits, except pdiddy. i try to help where i can.

pdiddy = you / your friend owes me some k. i'll settle for cali's butt. you can mail it to me if you want.
 
You must log in or register to reply here.

Similar threads

Fella Finn
Approved Domestic Supply Product of the Week: ORIGINAL SAXENDA (Liraglutide) 3 PRE-FILLED PENS
Replies
11
Views
1K
ceo
ceo
Fella Finn
Approved Domestic Supply Product of the Week: ORIGINAL SAXENDA (Liraglutide) 3 PRE-FILLED PENS
Replies
11
Views
1K
zedhed
zedhed
Macedog24
PSL Sale A SYNERGETIC SALE HGH+T4 🔥
Replies
4
Views
252
Macedog24
Macedog24
Macedog24
PSL Sale BOOST your fat-loss limited-time 50% off
Replies
10
Views
1K
Macedog24
Macedog24
yankeedoodle
Approved Log Testosterone Equipoise Trenbolone NPP HGH Anavar Anadrol Return Log
Replies
33
Views
3K
ballin2504
ballin2504
Top Bottom