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Question 212009: Due to evaporation, the volume of liquid in a beaker decreased by 20 percent every hour. If the volume of liquid in a beaker was initially m cubic centimeters, what was the volume of the liquid in the beaker after 3 hours?
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Due to evaporation, the volume of liquid in a beaker decreased by 20 percent every hour. If the volume of liquid in a beaker was initially m cubic centimeters, what was the volume of the liquid in the beaker after 3 hours?
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After each hour, 80% remains of what there was an hour ago.
After 3 hours, that's
m*0.8*0.8*0.8
= m (0.8^3)
= 0.512m cc
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