SOLUTION: The population of an island increases by 10% each year. After how many years will the original population be doubled?
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Question 800321: The population of an island increases by 10% each year. After how many years will the original population be doubled?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the starting population
Let = the population for the current year
Start of 1st year:
----------
Start of 2nd year:
---------------
Start of 2nd year:
---------------
Start of 3rd year:
---------------
In what year will ?
After 7 years the population is doubled
check:
close enough
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