The amount of water flowing into a tank doubles every minute. The tank is full in an hour. When was the tank half full?
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the tank was full at 59 minutes
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There's probably an equation for this or something but waht I can say is that the answer isnt 59 minutes. What i did was take 1 (could theoretically be any number) and made a list of every number (including 1) doubled (ex. 1, 2, 4, 8, 16) until i had 60 (number of minutes) numbers. Then i added every number in the list together and got about 1.130931147x10^18. Divided that number by 2 and looked for a similar number on my list. Obviously the answer (5.65455736x10^17) was close to (just slightly less than) the 60th number, but exactly what time did it reach 5.65455736x10^17 is a question i dont know the answer to...
EDIT: i just want to add the the number is hardly even close to the 59th number
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