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Can I get help with this ? Modern medical advances might mean people could live 200 years. In​ 2009, the life expectancy is about 80 years. Assume​ that, due to modern​ advances, life expectancy gains 5.2 years every decade. From​ 2009, in how many years would humanity achieve a life expectancy of 110
​years?

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I'm restating this for you: if every 10 years(decade) you gain 5.2 years of life ..how long would it take to go from age 80 to age 110.... then if you decide that number add it to 2009 to see when would this be possible.