woodchurch science

21 04 2008

bacteria prize puzzle

Posted by: woodchurchscience in biology, fun stuff, ks3, ks4, warren

a scientist is experimenting with bacteria that are one micron in diameter and that reproduce by dividing every minute into two bacteria. at 12:00pm, he puts a single organism in a container. at precisely 1:00pm, the container is full. at what time was the container half full? answers by comment button please (a prize for the first correct answer).

This entry was posted on Monday, April 21st, 2008 at 10:27 pm and is filed under biology, fun stuff, ks3, ks4, warren. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

6 Responses to “bacteria prize puzzle”

1.   Charlotte Says:
   April 24th, 2008 at 4:42 pm

   Hiya

   Was the container half full at 12:30 pm.

   Charlotte Blundell
   9xe

2.   woodchurchscience Says:
   April 24th, 2008 at 9:36 pm

   obvious answer but wrong…doubles every minute…full at 1.00pm, so half full when?

3.   Charlotte Says:
   April 25th, 2008 at 6:01 pm

   was it full at 12.15 pm

4.   michaeldavies Says:
   April 25th, 2008 at 6:39 pm

   This is too close to maths for my liking..

5.   Allan Mason-Whelan Says:
   April 25th, 2008 at 7:42 pm

   It is half full at 12:59pm.

6.   woodchurchscience Says:
   April 26th, 2008 at 11:40 am

   well done allan, thats correct. see me for a prize…

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