Q. 93
Life Science : Bacteria can divide in every 20 minutes. So 1 bacterium can multiply to 2 in 20 minutes. 4 in 40 minutes, and so on. How many bacteria will there be in 6 hours? Write your answer using exponents, and then evaluate.
Answer :
1 hour = 60 minutes
So 6 hours = 60 × 6
= 360 minutes
As mentioned in the question bacteria doubles itself in every 20 minutes.
So number of times bacteria doubles itself in 360 min = 360 / 20
= 18
∴ Number of bacteria in 6 hours = 218
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