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OfflinePhychotron
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Help me solve this math problem
    #4205157 - 05/22/05 12:59 AM (11 years, 6 months ago)

so i've been going over it for a long time, trying to figure it out, i know the answer, as it's in the back of the book, but i need to know how to solve the damn thing.... it's a word problem.

anyway, here goes

Bob drove from home to work at 50mph. After work, the traffic was heavier, and he drove home at 45 mph. his driving time to and from work was 1 hour 16 minutes. How far does he live from his job.

i'm going to hold back the answer, untill it get's solved, so it wont influence anyone's work...

normaly i would just skip this problem, but i'm looking at the quiz, and thier's the exact same question, with different numbers... it's hella lame... cause i've gone over it like 15 times trying to figure out a working 'time'


--------------------
On a mission to prove that the truth gets you no where.
They tried the truth, It didn't work. Then they wrote the bible. 

Only the foolish fear the inevitable.


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InvisibleLe_Canard
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Registered: 05/17/03
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Re: Help me solve this math problem [Re: Phychotron]
    #4205192 - 05/22/05 01:11 AM (11 years, 6 months ago)

Hmm...I'd say (but I could be wrong here) 63.3 miles. I got that by:

50miles [distance in an hour] + ((50 / 60 [distance in a minute] ) * 16 ) = 63.3333


Sound about right?


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InvisibleChe_Night_Soil
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Re: Help me solve this math problem [Re: Le_Canard]
    #4205216 - 05/22/05 01:20 AM (11 years, 6 months ago)

How did you fit that thing in the pub (your Saturday night cerebrum, that is)?


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InvisibleLe_Canard
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Re: Help me solve this math problem [Re: Che_Night_Soil]
    #4205223 - 05/22/05 01:21 AM (11 years, 6 months ago)

Heh! :grin: Thanks, but it's really not that hard. When you get up to Calculus, I'm totally lost...


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OfflinePhychotron
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Re: Help me solve this math problem [Re: Le_Canard]
    #4205231 - 05/22/05 01:25 AM (11 years, 6 months ago)

you're  WAY OFF! :grin:


but thanks for checking
D=RT


--------------------
On a mission to prove that the truth gets you no where.
They tried the truth, It didn't work. Then they wrote the bible. 

Only the foolish fear the inevitable.


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InvisibleChe_Night_Soil
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Re: Help me solve this math problem [Re: Le_Canard]
    #4205243 - 05/22/05 01:27 AM (11 years, 6 months ago)

I'm going to put it off as long as possible (calc). As long as it can be used for evil, though....


--------------------
if(human==autoPart){
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getBorn(mind,soul);
getEdu(mind,soul);
getJob(mind,soul);
retire(mind,soul);
die(mind,soul);
}
}


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Invisiblephalloidin

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Posts: 865
Re: Help me solve this math problem [Re: Che_Night_Soil]
    #4205246 - 05/22/05 01:28 AM (11 years, 6 months ago)

I got 30 miles.

x/50 + x/45 = 76/60
10x/450 + 9x/450 = 76/60
19x/450=76/60
1140x=34200
x=30


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OfflinePhychotron
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Re: Help me solve this math problem [Re: phalloidin]
    #4205252 - 05/22/05 01:30 AM (11 years, 6 months ago)

man, i had 19x/450 once, but didnt do the 76/60 how did you figure to divide by 60?

good job, x=30


--------------------
On a mission to prove that the truth gets you no where.
They tried the truth, It didn't work. Then they wrote the bible. 

Only the foolish fear the inevitable.


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Invisiblephalloidin

Registered: 07/03/04
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Re: Help me solve this math problem [Re: phalloidin]
    #4205281 - 05/22/05 01:35 AM (11 years, 6 months ago)

to convert minutes into hours, you have to remember to divide by 60
1 hour and 16 minutes = 60/60 + 16/60


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OfflinePhychotron
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Re: Help me solve this math problem [Re: phalloidin]
    #4205305 - 05/22/05 01:38 AM (11 years, 6 months ago)

but wouldnt it just be 76?


--------------------
On a mission to prove that the truth gets you no where.
They tried the truth, It didn't work. Then they wrote the bible. 

Only the foolish fear the inevitable.


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InvisibleLe_Canard
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Re: Help me solve this math problem [Re: Phychotron]
    #4205310 - 05/22/05 01:38 AM (11 years, 6 months ago)

Quote:

Phychotron said:
you're  WAY OFF! :grin:


but thanks for checking
D=RT




Am I?  :frown: Oh well....


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Invisiblephalloidin

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Re: Help me solve this math problem [Re: Phychotron]
    #4205328 - 05/22/05 01:40 AM (11 years, 6 months ago)

it would be 76 minutes. If your speed was given in miles per minute, that would be fine, but since the speed is mph, your time needs to be in hours so that the units cancel out.


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OfflinePhychotron
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Re: Help me solve this math problem [Re: Phychotron]
    #4205335 - 05/22/05 01:41 AM (11 years, 6 months ago)

the whole basis of my calculations was x/50 + x/45 = 76. But apparently the /60 was where i fucked up... and i think i realize why it didnt work, cause i was doing mph to mp minute...


--------------------
On a mission to prove that the truth gets you no where.
They tried the truth, It didn't work. Then they wrote the bible. 

Only the foolish fear the inevitable.


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OfflinePhychotron
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Re: Help me solve this math problem [Re: phalloidin]
    #4205343 - 05/22/05 01:42 AM (11 years, 6 months ago)

right, so obvious now.

thanks, you rock


--------------------
On a mission to prove that the truth gets you no where.
They tried the truth, It didn't work. Then they wrote the bible. 

Only the foolish fear the inevitable.


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InvisibleLe_Canard
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Re: Help me solve this math problem [Re: phalloidin]
    #4205394 - 05/22/05 01:52 AM (11 years, 6 months ago)

Quote:

MrTryptastic said:
it would be 76 minutes.




Er...didn't the problem ask for distance?


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Offlinecybrbeast
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Re: Help me solve this math problem [Re: Phychotron]
    #4205493 - 05/22/05 02:17 AM (11 years, 6 months ago)

1 hour 16 min = 76x60 = 4560sec

50 mph = 22.35200 m/s
45 mph = 20.1168 m/s

(22.35200 * X) + (20.1168 * X) = 4560s

/20.1168

(1.11111111 * X) + (X) = 226.676211s

2.11111111 X = 226.676211s

/2.11111111

X = 107.372942 s

bla bla, math sucks


Edited by cybrbeast (05/22/05 02:18 AM)


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