Question

If the cost of a gallon of gas was $2.59 this time last year and is $3.19 now, what is the percent increase in cost?

Answer 1

23.2 % ( to 1 decimal place )

Explanation:

first calculate the increase in cost =$3.19 - $2.59 = $0.60

now percentage increase = `0.60/2.59` x 100%# =23.2% (1 decimal place )

NB: percentage increase = increase /original cost x 100%

and percentage decrease = decrease / original x 100%