Gas prices decreased this week from $4 per gallon to $3.80 per gallon. what percent of decrease does this represent?

4-3.8=.2 , and .2 times 100 is 20, so to get the percent, you divide 20 by 4, and you get 5%. So it decreased 5%

4-3.8=.2 , and .2 times 100 is 20, so to get the percent, you divide 20 by 4, and you get 5%. So it decreased 5%hope this helps you(:

if not plz let me know("

$7.50x+$4.50y=midk it's been awhile since i've done one of these