in September, your grocery bill was $82.50 and the next month it was $ 97.20 for the same exact items

Question

in September, your grocery bill was $82.50 and the next month it was $ 97.20 for the same exact items. find the percent increase for your grocery bill?

Answer 1

Percent increase is defined as the amount of increase over the original amount expressed as a percent.

 

Amount of increase:  97.20 - 82.50 = 14.70

 

Original amount:  82.50

 

Increase / Original:  14.70 / 82.50 = 0.178181...

 

Express as a percentage:  0.178181... x 100 is approximately 17.82 % increase

 

You will likely want to round your answer as appropriate for a given question.