Question

You start with 23 billion yeast cells (23x10e9) and they have a doubling time of 90 minutes, after how long will your starter hold 90 billion yeast?
Please input your answer in minutes

x(t) = x0 × (1 + r) t
My answer is 136..

is this correct?
Thanks

Answer 1

check your calculations

90 = 23 * 2^(m / 90)

log(90 / 23) = (m / 90) log(2)

Answer 2

ok Sir

would be 270 minutes