Answer:
30.mph
Step-by-step explanation:
20/20=1 40/20=2. 2 minutes for every mile 2 X 30=60 (60 minutes) 1 X 30=30 (30 miles)
The difference is 130-150 = -20, a decrease.
-20/150 ≅ -0.133, a decrease of 13.3%
The mean of the numbers are 1
