SOLUTION: The water level in a water tank rises 20 percent when it is filled in the morning and falls 20 percent during the day. What is the net rise or fall in the water level in the tank
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Question 1096679: The water level in a water tank rises 20 percent when it is filled in the morning and falls 20 percent during the day. What is the net rise or fall in the water level in the tank? Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! let the original amt = 1
then 1.2 = a 20% increase
and
A 20% decrease means that 80% remains
therefore
1.2 * .8 = .96 remains so there is a 4% drop
