Question

5. Bacteria increase at the rate proportional to the
number present. If the original number N doubles in
3 hours, find in how many hours the number of
bacteria will be 4N?​

Answer 1

Answer:

6 hours

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Answer 2

Answer:

n becomes 2n in 3 hours

so 2n will become 4n in another 3 hours

so total time = 6 hours