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21 January, 20:35

If the number of bacteria in a colony doubles every 380 minutes and there is currently a

population of 42,450 bacteria, what will the population be 760 minutes from now?

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  1. 21 January, 21:42
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    In 380 minutes time, it will have doubled.

    42,450 x 2 = 84,900

    To get from 380 to 760, you double again.

    So you need to multiply 84,900 by 2 again.

    84,900 x 2 = 169,800.

    Your answer is 169,800.
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