The mean of 4 test scores is 90. What is the sum of the scores?

4 * 90 = ?

360

To find the sum of the four test scores, we need to know the mean and the number of scores.

The mean of the test scores is 90, which represents the average of the scores. This means that if we add up all four scores and divide the sum by 4, we will get 90.

To find the sum of the scores, we can use a simple algebraic equation:

Let x represent the sum of the four test scores.

We know that the mean is calculated by summing up all the scores and dividing by the number of scores. In this case, the mean is 90, and there are 4 test scores. Therefore, we can write the equation:

(x/4) = 90

To find the sum (x), we can multiply both sides of the equation by 4:

x = 90 * 4

x = 360

So, the sum of the four test scores is 360.