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If a bacteria population doubles in 7 days when was it half the present population.
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The bacteria population doubles in 7 days. If the population on day T is N, the population on day T+7 is 2*N.
The population of bacteria is N/2 on day T - 7.
The population of bacteria was half the present population 7 days back.
Posted by justaguide on April 26, 2013 at 4:06 AM (Answer #1)
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