Answer:
A
Step-by-step explanation:
(1/3) / 5 is 0.066 and (1/15) is 0.066
ANSWER
Approximately after 15 minutes.
EXPLANATION
The growth rate of the first bacteria is

The growth rate of the first bacteria :

To find the time that, there will be an equal number of bacteria, we equate the two equation;



We solve for t to get,

Or

We discard the negative value.
This implies that,

5p² - p - 18 = (5p +9)(p - 2)