Question

Find each percent decrease. Round to the nearest percent. From 20 miles to 11 miles

Answer 1

The answer is 45%. The miles went down 9 miles, so you do 9/20, or 45%

Answer 2

First we should find the percent that this number of miles are currently at:
20n = 11
n = 11/20
n = 0.55
1 - 0.55 = 0.45
A 45% decrease