what is the percent of increase from 20 to 39? A)49 B)51 C)95 D)105

39 - 20 = 19

20/19 = ??

Right

To calculate the percent increase from 20 to 39, you need to find the difference between the two numbers, divide it by the original number, and multiply by 100.

Step 1: Find the difference between the two numbers.
39 - 20 = 19

Step 2: Divide the difference by the original number.
19 / 20 = 0.95

Step 3: Multiply the result by 100 to convert it to a percentage.
0.95 x 100 = 95

Therefore, the percentage increase from 20 to 39 is 95%.

So, the correct answer is C) 95.