If the mean of four numbers is 3, what is their total sum?

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Multiple Choice

If the mean of four numbers is 3, what is their total sum?

Explanation:
Mean is the total sum divided by how many numbers you have. To find the total when you know the mean and the count, multiply the mean by the count. Here there are four numbers and the average is three, so the total sum is 3 × 4 = 12. That makes sense because 12 divided by four gives back the average of three. Any other total would produce a different average, so it wouldn’t fit the given information.

Mean is the total sum divided by how many numbers you have. To find the total when you know the mean and the count, multiply the mean by the count. Here there are four numbers and the average is three, so the total sum is 3 × 4 = 12. That makes sense because 12 divided by four gives back the average of three. Any other total would produce a different average, so it wouldn’t fit the given information.

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