Question

A swimming pool has 2.5 million liters of water in it. Some water evaporated and then the pool only has 2 millions liters in it. What percent of the water evaporated?

Answer 1

20% was evaporated

Explanation:

Formula:

((New value-old value)/(old value))*100

((2-2.5)/(2.5))*100 = 20

Answer 2

20% of the water evaporated

Explanation:

We know that 500,000 evaporated because 2,500,000-2,000,000 is 500,000.

100% - 2,500,000

500,000 - x%

2,500,000/500,000 = 100/x

x=(500,000)(100)/2,500,000

x= 20%

20% of the water evaporated.