The first generation of micro-organisms has a population of 13500 members. Each next generation is 11/10 times the previous one. Find out how many generations will reach at least three times members of the first generation.

Correct result:

n =  12


q=1110=1.1  qn=3  n lnq=ln3  n1=ln(3)/ln(q)=ln(3)/ln(1.1)11.5267 n=n1=11.5267=12

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