In order to get the new population of bacteria in <em>690 minutes</em>, you have to know how often the bacteria will divided in the time frame. So, you have to <em>divide </em><em>690 minutes </em><em>by </em><em>230 minutes.</em>
690 min. ÷ 230 min. = 3 times
The bacteria wil<u>l double its colony 3 times in 690 minutes</u>.
<em>First division:</em>100 x 2 = 200 bacteria
<em>Second division:</em>200 x 2 = 400 bacteria
<em>Third division:</em>400 x 2 = 800 bacteria
Therefore, the population of bacteria will be 800 in 690 minutes.