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10 December, 00:47

A culture started with 2,000 bacteria. After 2

hours, it grew to 2,400 bacteria. Predict how

many bacteria will be present after 10 hours.

Round your answer to the nearest whole

number.

P = Aekt

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Answers (1)
  1. 10 December, 01:07
    0
    Answer: In 10 hours, 4000 bacteria will be present.

    Step-by-step explanation:

    Given that 2000 bacteria grew to 2400 in 2 hours,

    growth / increase rate = 2400 - 2000

    = 400 bacteria increase in 2 hours

    Per hour is therefore 400/2 = 200 bacteria increase per hour

    If the bacteria increases by 200 per hour

    If 200 = 1 hour

    X = 10 hours

    We cross multiply:

    X = 200 x 10

    X = 2000

    Therefore, a culture with 2000 bacteria at the same growth rate will have increased by additional 2000 in 10 hours

    So, after 10 hours, number of bacteria will be 2000 + 2000 = 4000 bacteria
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