Question

The gas price per gallon decreased from $2.20 per gallon to $1.96 per gallon. What percent was the decrease?

Answer 1

Amount decreased:
2.20-1.96=0.24
0.24/2.2=10. 9%

Answer 2

2.20 - 1.96 = 0.24 which is the decrease.
(0.24/2.2) x 100 = 120/11 which is approximately 10.91% (2dp)