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A swimming pool had 2 . 5 2.52, point, 5 million liters of water in it. Some water evaporated, and then the pool only had 2 22 million liters of water in it.

User JustinN
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the correct question is
A swimming pool has 2.5 million liters of water, some water evaporated and now there is only 2 million liters. How much percent evaporated?

Let
x ----------------- > initial swimming pool liters of water
y------------------ > final swimming pool liters of water
z------------------- > percent evaporated liters of water

z=[(x-y)/x]*100

we know that
x=2.5 million liters
y= 2 million liters
therefore
z=[(2.5-2)/2.5]*100=20 %

the answer is 20%



User Dietmar
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