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# Pole in lake

### #1

Posted 02 July 2007 - 07:48 AM

### #2

Posted 02 July 2007 - 02:18 PM

He's one big Pole.

There's a man walking to an Olympic village with a long stick under his arm. Security stops him and asks

'Are you a pole vaulter?'

The man replies ' Nine. I am German. But how did you know my name was Walter!'

### #3

Posted 02 July 2007 - 02:25 PM

### #4

Posted 14 January 2008 - 03:54 PM

### #5

Posted 14 January 2008 - 04:49 PM

hmmmm.... methinks it's more than that.... Cos if 50% of pole is in the ground and 33% (one third) is in the water then only 17% is sticking out of the water. The eight feet represents 17% of the total length of the pole there fore the total length is 331 feet!

I'm not sure what how you're performing your calculations, but using the percentage data, I was able to come up with 47 and a fraction.

How I [originally] calculated it:

x/2 + x/3 + 8 = x

x/2 + x/3 -x = -8

3x/6 + 2x/6 - 6x/6 = -8

-x/6 = -8

-x = -48

x = 48

### #6

Posted 06 February 2008 - 03:13 PM

1/3 (of what is not in the ground) is under water

8 ft. is out of the water.

I------------I----|----|----I

1/2 in the ground

I------------I----|----|----I 2/3 = 8ft

...........................8ft

If 2/3 = 8ft then the other 1/3 = 4ft

I------------I----|----|----I

............................12'

12' doubled - as half of the pole is in the ground- is 24'

I------------I----|----|----I

...............24'

Right??

**Edited by Emapher, 06 February 2008 - 03:15 PM.**

### #7

Posted 06 February 2008 - 04:02 PM

no,1/2 Is in the ground-

1/3 (of what is not in the ground) is under water

8 ft. is out of the water.

I------------I----|----|----I

1/2 in the ground

I------------I----|----|----I 2/3 = 8ft

...........................8ft

If 2/3 = 8ft then the other 1/3 = 4ft

I------------I----|----|----I

............................12'

12' doubled - as half of the pole is in the ground- is 24'

I------------I----|----|----I

...............24'

Right??

1/3 (of what is not in the ground) is under water <--- that is your error. its 1/3 of the ENTIRE pole not just whats out of the ground.

{------------------------}[----------------]|--------| {ground} [water] |air| one - = 1ft

1/2 = 3/6

1/3 = 2/6

+________

5/6

meaning 1/6 = 8ft

8x6 = 48 ft.

### #8

Posted 06 February 2008 - 07:55 PM

hmmmm.... methinks it's more than that.... Cos if 50% of pole is in the ground and 33% (one third) is in the water then only 17% is sticking out of the water. The eight feet represents 17% of the total length of the pole there fore the total length is 331 feet!

8 / 0.17 = 47+

8 / 331 = 0.024169 = 2.4% not 17%

### #9

Posted 06 February 2008 - 08:05 PM

1/2 + 1/3 = 5/6

1/6*x = 8; where x = length of the pole

x = 48

Nice puzzle. I haven't manually added a fraction in a long time!

### #10

Posted 06 February 2008 - 08:47 PM

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