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20 March, 16:08

A certain strand of bacteria triples every hour. At 1:00 pm there were 5 bacteria. Determine how many bacteria there would be at 5:00 pm on the same day?

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  1. 20 March, 19:03
    0
    20 bacteria I believe.
  2. 20 March, 19:09
    0
    1pm - 5 bacteria

    2pm - 5x3 = 15 bacteria

    3pm - 15x3 = 45 bacteria

    4pm - 45x3 = 135 bacteria

    5pm - 135x3 = 405 bacteria

    The correct answer would be there's 405 bacteria at 5 o'clock pm
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