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Question

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StillGhood
Posts: 305 - Karma: 613
This is a math question

There is a lake with Lily pads
Everyday the number of lily pads doubles
The lake is full by 48 days

On what day is the lake half full?
Feb 1 2013 1:01PM
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.MintBerryCrunch
Posts: 750 - Karma: 346
uhh...47 days?
Feb 1 2013 1:04PM
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act.resist
Posts: 8875 - Karma: 513
wouldn't it depend on how many lily pads it takes for the pond to be full?
Feb 1 2013 1:06PM
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cbj
Posts: 2114 - Karma: 1,136
Lol true.

Unless it increased by an amount equal to twice the previous number of lily pads (ex. 1+2+4 = 7 on third day, etc.)
Feb 1 2013 1:07PM
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.AR6rider.
Posts: 15976 - Karma: 8,799
.
Feb 1 2013 1:07PM
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act.resist
Posts: 8875 - Karma: 513
math is hard
Feb 1 2013 1:10PM
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cbj
Posts: 2114 - Karma: 1,136
N(2^t) = 1/2 N(2^48)
2^t = (2^-1)*(2^48)
2^t = 2^(48-1)
t = 48-1
t = 47

Where t is the number of days passed and N is the original amount of lily pads.
Feb 1 2013 1:17PM
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theblackrod
Posts: 2162 - Karma: 575
truth. also. from half full to completely full is 1 day, if it doubles. .5*2=1, so 48-1=47
Feb 1 2013 2:30PM
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Deezy
Posts: 4580 - Karma: 1,004
you're fucking kidding...
Newschoolers now does your math homework?
Try this: http://bit.ly/WDzz26
Feb 1 2013 2:50PM
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Lt-Aldo-Raine
Posts: 2309 - Karma: 120
i got 6, what did you get?
Feb 1 2013 3:36PM
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Stickity
Posts: 7750 - Karma: 769
i got 37 minutes and 8 seconds. did you take the flux of the gaussian surface into account?
Feb 1 2013 3:51PM
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StillGhood
Posts: 305 - Karma: 613
Answer is 47. The number is irrelevant. If its full on day 48 and it doubled in size everyday before then on day 47 it would be half full
Feb 1 2013 8:28PM
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.AR6rider.
Posts: 15976 - Karma: 8,799
Uhh...no shit.
Feb 1 2013 8:40PM
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DANETRON
Posts: 6671 - Karma: 137
Never? Pretty sure lilly pads can only grow within a certain depth of water which keeps them around the sides?
Feb 1 2013 8:44PM
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accualyisdolan
Posts: 3295 - Karma: -192
This question is trivisl
Feb 1 2013 9:06PM
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All times are Eastern (-5)