To find out what percent of the water evaporated, we need to compare the difference in the amount of water before and after with the original amount.
The difference in water before and after is $2.5-2=0.5$ million liters.
So, $\frac{0.5}{2.5}=\frac{1}{5}=0.2=20\%$ of the water evaporated.
Therefore, $\boxed{20\%}$ of the water evaporated.
A swimming pool had
\[2.5\] million liters of water in it. Some water evaporated, and then the pool only had
\[2\] million liters of water in it.
What percent of the water evaporated?
1 answer
2 answers