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3 June, 06:50

A colony of 50 bacteria doubles in size every 170 minutes. What will the population be 680 minutes from now?

(not multiple choice)

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  1. 3 June, 07:02
    0
    Ok to start divide 680 by 170 which = 4

    it doubles 50 each time so it would have doubled 4 times 50+50+50+50+50+50+50+50

    1 1 2 2 3 3 4 4

    100 200 300 400
  2. 3 June, 07:17
    0
    You know that total time is 680. The population doubles every 170

    680/170 = 4

    The value of 4 means that the population will double four times or it goes through 4 iterations.

    Initial Population = 50

    1st iteration = 50 * 2 = 100 (it doubles the previous pop.)

    2nd iteration = 100 * 2 = 200 (it doubles the previous pop.)

    3rd iteration = 200 * 2 = 400 (it doubles the previous pop.)

    4th iteration = 400 * 2 = 800 (it doubles the previous pop.)
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