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A particular strain of bacteria triples in population every 45 minutes. Assuming you start with a 50 bacteria in a petri dish, how many bacteria will there be in 4.5 hours?
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Apr 24, 2017
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A particular strain of bacteria triples in population every 45 minutes. Assuming you start with a 50 bacteria in a petri dish, how many bacteria will there be in 4.5 hours?
Mathematics
high-school
Dogcat
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find how long you take
45 minutes=0.75 hours
0.75 times x=4.5
divide both sides by 0.75
x=6
there are six 45 minute sections in 4.5 hours
tripples every time
triples 6 times
times 3 six times
times 3^6
start with 50
50 times 3^6=36450 bacteria
Tgralex
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Apr 26, 2017
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4.5 hours in minutes = 270
Every 45 minutes, bacteria triples
You start with 50
Divide 270 (total time) by 45 (every time bacteria triples)
270/45 = 6
36,450 bacteria
MartinSGill
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Apr 28, 2017
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