Question

Last year you bought a pair of boots for $84 last year. Your friend bought the same pair of boots this year for $120. What is the percent of change in the cost of the boots.

Answer 1

30%

Explanation:

70% of 120 is 84. So take the remainder of 70 (30, as %'s go up to 100.) and that's the percent left. We can "fact check this" the other way around as well.

30% of 120 = 36.

84 + 36 = 120.

The price of the boots have changed/raised 30%.

Hope this helps and have a nice day!