You are not logged in.
#2 2012-11-16 19:07:22
- bob bundy
- Moderator
Online
Re: Science: A bacteria doubles its population every 12 hours.
hi cat1kf2
Welcome to the forum.
Work backwards:
After 3 days ....................1600
12 hours earlier................ 1600 ÷ 2
after two days .................. ÷ 2 again
12 hours earlier ................ ÷ 2 again
After one day ................... ÷ 2 again
12 hours ealier ................. ÷ 2 again
start ................................ ÷ 2 again
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
#4 2012-11-18 19:59:11
- bob bundy
- Moderator
Online
Re: Science: A bacteria doubles its population every 12 hours.
hi SMboy,
Welcome to the forum.
What answer are you talking about ?
I gave a method, but deliberately did not say what I thought the answer is.
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
#5 2012-11-19 11:37:52
- Ms_Zee
- Guest
Re: Science: A bacteria doubles its population every 12 hours.
Hi SMboy,
The explanation you received from bob bundy is correct, you just need to work out the result.
[removed by administrator]
Hi;
The use of this site for personal advertising is forbidden. Everyone here is a volunteer. We have teachers, mathematicians, physicists, engineers, students and me all answering questions for nothing. If you would like to add your expertise to our group then that would be fine.
#6 2012-11-19 12:46:26
- mathgogocart
- Super Member
Offline
Re: Science: A bacteria doubles its population every 12 hours.
according to bob bundy(thank you)
the Awser is 25
woosh! woosh! bye as I go to Kanto.
#8 2012-11-22 15:30:00
- cat1kf2
- Novice
Offline
Re: Science: A bacteria doubles its population every 12 hours.
bob bundy wrote:
hi cat1kf2
Welcome to the forum.
Work backwards:
After 3 days ....................1600
12 hours earlier................ 1600 ÷ 2
after two days .................. ÷ 2 again
12 hours earlier ................ ÷ 2 again
After one day ................... ÷ 2 again
12 hours ealier ................. ÷ 2 again
start ................................ ÷ 2 again
Bob
Thanks for your help Bob