SOLUTION: A certain kind of bacteria triples every 2 hours.At 8:00 P.M.,there was 153,090 bacteria counted in the petri dish.How many were there at 6:00 A.M.?

Question 541307: A certain kind of bacteria triples every 2 hours.At 8:00 P.M.,there was 153,090 bacteria counted in the petri dish.How many were there at 6:00 A.M.?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A certain kind of bacteria triples every 2 hours.
At 8:00 P.M., there was 153,090 bacteria counted in the petri dish.
How many were there at 6:00 A.M.?
:
153,090 after 14 hrs
:
Let Ao = initial amt at 6 AM
:
= 153090
that's 14/2 so we have
= 153090
Ao*2187 = 153090
Ao =
Ao = 70 bacteria at 6 AM
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