Question

In November 2017, gas was selling for $3.31 a gallon. This was $.85 cheaper than a year before. What was the percent decrease?

Answer 1

Explanation:

so gas was selling for 3.31.......that is 85 cents cheaper then a yr before....so a year before it costs (3.31 + 0.85) = 4.16

% decrease = (decrease / original cost) * 100

= (0.85 / 4.16) * 100

= 0.2043 * 100

= 20.43% decrease <==

Answer 2

74.32

Explanation:

$3.31-$0.85=2.46

2.46/3.31×100=74.32