A reservoir level drops from 70 meters to 56 meters. What is the percent decrease? Enter the number of percent.
Ճիշտ պատասխան
20
Բացատրություն
The drop is 70 - 56 = 14 meters, and 14 / 70 x 100 = 20%. Using 56 as the denominator would give 25%, but the final level is not the base for percent change.