The growth rate of bacteria in a culture is 4% per hour. If tje count of bacteria at 11a.m.was 20,000, what will be the count of bacteria at 1 p.m.?
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Answered by
1
Answer:
100000 .................. .. ................
Answered by
5
Answer:
The count of bacteria at 1 p.m = 21632
Step-by-step explanation:
Let the time be of 24 hour format.
Then initial time = 1100 hours
final time = 1300 hours
Therefore, the time period = 1300 hours - 1100 hours
= 0200 hours
or 2 hours.
The bacteria count at 11 a.m = 20000
The bacteria count per hour = 4%
The increase in number of bacteria in 1st hour
= 4% of 20000 = 4/100 × 20000 = 800
Therefore, the count of bacteria at 12 p.m
= 20000 + 800 = 20800
The increase in number of bacteria in 2nd hour
= 4% of 20800 = 4/100 × 20800 = 832
Therefore, the count of bacteria at 1 p.m
= 20800 + 832 = 21632
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