Concept explainers
Find the time taken for the population to triple.
Answer to Problem 11CT
7.92 hours , or 7 hours 55 minutes 12 seconds.
Explanation of Solution
Given:
The population of a certain colony of bacteria doubles every 5 hours.
Calcultion:
Let
y% = rate of growth of bacteria , which is constant
t = time in hours for the population to get triple
So, count of bacteria after 5 hours is double :
Find y :
Now , find the time t when the count of bacteria is
So, the time is approximately 7.92 hours , or 7 hours 55 minutes 12 seconds. [1 hour = 60 minutes and 1 minute = 60 seconds]
Chapter 10 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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