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## Homework Statement

A culture begins with 100,000 bacteria and grows to 125,000 bacteria after 20 min. What is the doubling period to the nearest minute?

## Homework Equations

Current=Original(rate)^time

## The Attempt at a Solution

I can get make the first part out. 125000=100000(rate)^2 I have a feeling its wrong but its as far as i can get.