LET’S SPLIT
Maxwell Edison is studying a newly discovered hyperactive amoeba which multiplies at a highly accelerated rate. He places one such amoeba in a jar. After 15 seconds the amoeba splits. 15 seconds later the two amoebae split. 15 seconds after that the four amoebae split and so on. After two hours the jar is halfway full. How long will it take to fill the jar completely?
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15 seconds. Remember the first amoeba split in 15 seconds so in another 15 seconds they will all split and the jar will be filled.