Question

A bacterial culture starts with 3000 bacteria and increases to 48,000 after 3 hours, find the doubling time:

Answer 1

48000/3000 = 16 = 2^4, so it doubled 4 times in 3 hours, so ...

Answer 2

43

Answer 3

let t represent doubling time...
48000 = 3000(2)^3/t
16 = (2)^3/t
log16 = 3/t log 2
log16/log2 = 3/t
t = 0.75h

DOUBLING TIME IS 0.75 HOURS