bacteria can reproduce very quickly. If coditions are favourable bacteria can divide every 20 minutes. This mean small number of bacteria can multiply quickly. If 100 bacteria get into your body and reproduce every 20 minutes how many will there be in 2 hours

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Solution

Dear student.

If generation time is 20 minutes, then after 2 hour, 100 bacteria will produce 6400 number of bacteria.

Solution: 100 bacteria will become 200 after 20 minutes.
200 will become 400 after next 20 minutes.
This way the total number of bacteria at the end of 2 hours will be 6400.

Regards.

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