Answer:

Step-by-step explanation:
The population of bacteria can be calculated by using the following formula

Where, 
P represents the Population after time period "t"
 represents the initial population at
 represents the initial population at 

r represents the rate at which population is growing 
and t represents the time period in which 
 will become P
 will become P
Given - 

Substituting the given values in above equation, we get - 
