math
posted by Jackie .
A culture of bacteria grows exponentially. It doubles in size every 16 hours. How long will it take to triple from its original size?

3 = 1(2)^(t/16)
log 3 = log 2^(t/16)
log 3 = (t/16)log 2
t/16 = log3/log2
t = 16(log3/log2) = 25.36 hours
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