One bacterium divides into two bacteria every 6 minutes.If two bacteria multiply enough to completely fill a petri dish in 2 hours, how long will it take one bacterium to fill the dish?
A)2 hours
B)2 hours 12 minutes
C)2 hours 7 minutes
D)2 hours 18 minutes
E)2 hours 6 minutes

Question

Quizplus · Accepted Answer

Starting with one bacterium, it will take an additional 6 minutes to become two bacteria. Since two bacteria fill the dish in 2 hours, starting with one bacterium will take 2 hours plus the initial 6 minutes to double for the first time, totaling 2 hours and 6 minutes.

One Bacterium Divides into Two Bacteria Every 6 Minutes