Time #of cells 20min 1.6x10^7 70min 2.4x10^7 110 min 3.3x10^7 150 min 4.5x10^7 A

Question

      Time      #of cells    20min         1.6x10^7    70min         2.4x10^7    110 min      3.3x10^7    150 min      4.5x10^7       At what time will there be1.2x10^8 cells in the culture ? i know the answer is 4 x 10^8, but howdo I calculate this ?       Time      #of cells    20min         1.6x10^7    70min         2.4x10^7    110 min      3.3x10^7    150 min      4.5x10^7       At what time will there be1.2x10^8 cells in the culture ? i know the answer is 4 x 10^8, but howdo I calculate this ?

Explanation / Answer

where n is the doubling time andr is the growth rate (in percent per timeinterval).

Basically, just input the known doubling time and solve for theamount of time.

...you can get doubling time from g =(log10 Nt - log10 N0) /log102

(reference the answer I gave you on your other"generation problem" question).

I hope this helps, feel free to private message me ifyou need more assistance. Please don't forget torate!

n   =    ln 2 --------------- ln[1 + (r/100)]

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