What time will the dish be full?
A Petri dish hosts a healthy colony of bacteria. Once a minute every bacterium divides into two. The colony was founded by a single cell at noon. At exactly 12:43 (43 minutes later) the Petri dish was half full.
At what time will the dish be full?
Expert Asked on 24th August 2015 in Math Puzzles.
The dish will be full at 12:44.
Answer for old wording:
The saucer was half full at 11.59 – the next minute there will be twice as many of them there (so full at 12.00).
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