The regular price of an aquarium is $70 and the sale price is $60. what is the percent of discount? (percent of )

Let's take the difference between the old and new (70 - 60) to get 10 and then divide this by the old (70) amount...10/70 = .142857 convert to a percent by moving the decimal 2 spaces to the right...  14.29 %

You can use a calculater and divide the minutes by the $$, hope that you