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.
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 %
