A substance doubles its volume every minute. At a small
amount of the substance was placed in a large empty container. At the same day, the container became full. At what time was the
container one-quarter full?
, 2025
Pick one
Solution
Each minute time moves forward, the volume of the substance
doubles, and thus each minute time moves backward, the volume is
halved.
The container was full at 9:20 a.m., and so it was half full at 9:19
a.m., and one-quarter full at 9:18 a.m.
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