The number of years N(r) since two independently evolving languages split off from a %3D proportion (written as a decimal) of the words from the ancestral language that are common to both languages now. How many years have elapsed since the split if 50% of the words of the ancestral language are common to both languages today? Round your answer to the nearest year.

Question
The number of years N(r) since two independently evolving languages split off from a
%3D
proportion (written as a decimal) of the words from the ancestral language that are
common to both languages now. How many years have elapsed since the split if 50%
of the words of the ancestral language are common to both languages today? Round
your answer to the nearest year.
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The number of years N(r) since two independently evolving languages split off from a %3D proportion (written as a decimal) of the words from the ancestral language that are common to both languages now. How many years have elapsed since the split if 50% of the words of the ancestral language are common to both languages today? Round your answer to the nearest year.