The mean of the numbers 10, 15, 20, and 25 is:a.15b.17.5c.22.5d.25

To find the mean of a set of numbers, you need to add up all the numbers and then divide the sum by the total number of values.

In this case, we have the numbers 10, 15, 20, and 25.

Step 1: Add up all the numbers: 10 + 15 + 20 + 25 = 70

Step 2: Divide the sum by the total number of values: 70 / 4 = 17.5

Therefore, the mean of the numbers 10, 15, 20, and 25 is 17.5.

So, the correct answer is b. 17.5.

To find the mean (average) of a set of numbers, you add all the numbers together and then divide by the number of numbers.

Step 1: Add the numbers together. 10 + 15 + 20 + 25 = 70

Step 2: Divide the sum by the number of numbers. There are 4 numbers, so you divide 70 by 4. 70 ÷ 4 = 17.5

So, the mean of the numbers 10, 15, 20, and 25 is 17.5, which corresponds to option b.

To find the mean of a set of numbers, you need to add up all the numbers and then divide the sum by the total number of values.

In this case, we have the numbers 10, 15, 20, and 25.

Step 1: Add up all the numbers: 10 + 15 + 20 + 25 = 70

Step 2: Divide the sum by the total number of values: 70 / 4 = 17.5

Therefore, the mean of the numbers 10, 15, 20, and 25 is 17.5.

So, the correct answer is b. 17.5.

To find the mean of a set of numbers, you need to add up all the numbers and then divide the sum by the total number of values.

In this case, we have the numbers 10, 15, 20, and 25.

Step 1: Add up all the numbers: 10 + 15 + 20 + 25 = 70

Step 2: Divide the sum by the total number of values: 70 / 4 = 17.5

Therefore, the mean of the numbers 10, 15, 20, and 25 is 17.5.

So, the correct answer is b. 17.5.