Find the percent of increase or decrease to the nearest percent…
1. 8 to 10
2. 45 to 18
3. 12 to 4
4. 15 to 20
8 to 10, that is an increase of 2, or 2/8=25 percent
8 x = 10
x = 1.25
so
10 = 8 + 25% of 8
is that true?
8 + 8/4 = 8 + 2 = 10
sure enough 25%
x (45) = 18
x = 18/45 = .4
so it is only 40 % of original which is a decrease of 100 - 40 = 60% decrease
is that true?
60% of 45 = 27 is decrease
45 - 27 = 18 sure enough
To find the percent of increase or decrease, you need to calculate the difference between the two values and then divide that difference by the original value. Finally, multiply the result by 100 to express it as a percentage.
1. To find the percent of increase from 8 to 10, calculate the difference: 10 - 8 = 2. Then divide 2 by the original value, 8: 2 / 8 = 0.25. Finally, multiply 0.25 by 100 to express it as a percentage: 0.25 * 100 = 25%. Therefore, the percent of increase is 25%.
2. To find the percent of decrease from 45 to 18, calculate the difference: 18 - 45 = -27 (negative value indicates a decrease). Then divide -27 by the original value, 45: -27 / 45 = -0.6. Finally, multiply -0.6 by 100 to express it as a percentage: -0.6 * 100 = -60%. Therefore, the percent of decrease is 60%.
3. To find the percent of decrease from 12 to 4, calculate the difference: 4 - 12 = -8 (negative value indicates a decrease). Then divide -8 by the original value, 12: -8 / 12 = -0.67. Finally, multiply -0.67 by 100 to express it as a percentage: -0.67 * 100 = -67%. Therefore, the percent of decrease is 67%.
4. To find the percent of increase from 15 to 20, calculate the difference: 20 - 15 = 5. Then divide 5 by the original value, 15: 5 / 15 = 0.33. Finally, multiply 0.33 by 100 to express it as a percentage: 0.33 * 100 = 33%. Therefore, the percent of increase is 33%.