At the Acme Station last week a gallon of gas cost 3.30$.This week a gallon of gas cost 3.26$ at the same station. What was the percent of increase in the price since last week?

Question

At the Acme Station last week a gallon of gas cost 3.30$.This week a gallon of gas cost 3.26$ at the same station. What was the percent of increase in the price since last week? If the percent of increase remains the same for another week what will a gallon of gas cost next week?

Answer 1

the price decreased 4 cents per gallon

.04/3.30 = 0.0121212... = about 1.2% decrease

or if you want, call it a -1.2% increase

if it continues next week it will cost 3.95 cents less or about $3.22 per gallon

(unless a Russian hacker cuts our pipelines again)