Member of the Month

hi_vis360
November, 2024

Online

Welcome to the Newschoolers forums! You may read the forums as a guest, however you must be a registered member to post. Register to become a member today!

Question

profile picture
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
1 0
profile picture
.MintBerryCrunch
Posts: 750 - Karma: 346
uhh...47 days?
Feb 1 2013 1:04PM
0 0
profile picture
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
0 0
profile picture
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
0 0
profile picture
.AR6rider.
Posts: 15976 - Karma: 8,799
.
Feb 1 2013 1:07PM
0 0
profile picture
act.resist
Posts: 8875 - Karma: 513
math is hard
Feb 1 2013 1:10PM
0 0
profile picture
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
0 0
profile picture
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
0 0
profile picture
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
0 0
profile picture
Lt-Aldo-Raine
Posts: 2309 - Karma: 120
i got 6, what did you get?
Feb 1 2013 3:36PM
0 0
profile picture
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
0 0
profile picture
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
0 0
profile picture
.AR6rider.
Posts: 15976 - Karma: 8,799
Uhh...no shit.
Feb 1 2013 8:40PM
0 0
profile picture
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
0 0
profile picture
accualyisdolan
Posts: 3295 - Karma: -192
This question is trivisl
Feb 1 2013 9:06PM
0 0
All times are Eastern (-5)