A certain culture of bacteria quadruples every hour. If a container with these bacteria was half full at 12:00 a.m., at what time was it one-eighth full? Choose the correct choice from the following options:
A) 9:00 a.m.  B) 7:00 a.m.  C) 6:00 a.m.  D) 4:00 a.m.  E) 11:00 a.m.
To go from one-eighth (1/8) full to half (1/2) full culture of bacteria should quadruple: 1/8*4=1/2, as it quadruples every hour then container was one-eighth full at 12:00 a.m -1 hour = 11:00 a.m.   Answer: 11:00 a.m..
<result>E</result>
A certain culture of bacteria quadruples every hour. If a container with these bacteria was half full at 12:00 a.m., at what time was it one-eighth full?