i = initial population
(i * 1.4) * x = 7 i
x = 5 ... this means 1 + 400% ... a 400% increase
During two years, the population of birds of an island became 7 times more than before. If the first year increase in the population was 40% , what was the percent increase of the second year?
Who asks questions about birds on an island? Anyways, I need help. This is super hard and... I would appreciate it if you would help.
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