Question

At​ noon, a tank contained 5 cm of water. After several​ hours, it contained 3 cm of water. What is the percent decrease of water in the​ tank?

Answer 1

Answer: 40% decrease

Step-by-step explanation:

The change in the water level is 5-3 = 2 cm

Divide this difference over the original amount to get 2/5 = 0.40 = 40%

So the percent decrease is 40%