Find the percent change if 20 is
decreased to 15
a 15%
b 20%
c 25%
d 33%
(20-15)/20 = 5/20 = 25%
To find the percent change, you need to calculate the difference between the initial value and the final value, and then divide it by the initial value. Finally, multiply the result by 100 to convert it into a percentage.
In this case, the initial value is 20 and the final value is 15.
Step 1: Find the difference
Difference = Final value - Initial value
Difference = 15 - 20
Difference = -5
Step 2: Calculate the percent change
Percent Change = (Difference / Initial value) * 100
Percent Change = (-5 / 20) * 100
Percent Change = -0.25 * 100
Percent Change = -25
Since the result is negative, it means there was a decrease. Therefore, the correct answer is c) 25%.