Question

Jessica went shopping for a new watch. She found a watch that was originally priced at $50 on sale for $40. What is the percent of decrease

Answer 1

Jessica, the answer is 20% off. All percents are out of 100, so you can multiply    50 x 2 = 100, and do the same with 40 x 2 = 80. Take your two answers, 100 and 80, and subtract 100 - 80 = 20, so the answer is 20% Hope this helped!