Find the Percent change. Indicate whether it is an increase or a decrease. Round to the nearest percent. SOLVE AND SHOW WORK
25. Cindy bought a sweater for $40 that was priced the week before $50.
27. The factory hired seven new workers, bringing its total to sixty-six.
29. The new car sells for $46,000. A comparably equipped one sold for $39,000 five years ago.
31. The university added 20,500 new seats to the existing stadium's 45,000 seats.
33. When the new machine was introduced, the output went from 24 to 80 units per day.
25. To find the percent change, we first find the difference between the two prices: $50 - $40 = $10. Then, we divide that difference by the original price: $10 / $50 = 0.2. Finally, we multiply by 100 to get the percent: 0.2 * 100 = 20%. Since the sweater's price went down, this is a 20% decrease.
27. To find the percent change, we first find the difference between the two numbers: 66 - 7 = 59. Then, we divide the difference by the original number: 7 / 59 = 0.1186. Finally, we multiply by 100 to get the percent: 0.1186 * 100 = 11.86%, which rounds to 12%. Since the number of workers increased, this is a 12% increase.
29. To find the percent change, we first find the difference between the two prices: $46,000 - $39,000 = $7,000. Then, we divide that difference by the original price: $7,000 / $39,000 = 0.1795. Finally, we multiply by 100 to get the percent: 0.1795 * 100 = 17.95%, which rounds to 18%. Since the car's price went up, this is an 18% increase.
31. To find the percent change, we first find the difference between the two numbers: 45,000 + 20,500 = 65,500. Then, we divide that difference by the original number: 20,500 / 45,000 = 0.4556. Finally, we multiply by 100 to get the percent: 0.4556 * 100 = 45.56%, which rounds to 46%. Since more seats were added, this is a 46% increase.
33. To find the percent change, we first find the difference between the two numbers: 80 - 24 = 56. Then, we divide that difference by the original number: 56 / 24 = 2.3333. Finally, we multiply by 100 to get the percent: 2.3333 * 100 = 233.33%, which rounds to 233%. Since the output increased, this is a 233% increase.