Question
If the average (arithmetic mean) of 10 numbers is 5.6, what is the sum of the numbers?
53
54
55
56

56

Step-by-step explanation:

Arithmetic mean is simply the sum of the all the number present divide by the total number.

From the question, we obtained the following information:

The arithmetic mean = 5.6

Total number present = 10

Sum of the numbers =?

Arithmetic mean = sum of the numbers / total number

Sum of the numbers = arithmetic mean x total number

Sum of the numbers = 5.6 x 10 = 56

56

Step-by-step explanation:

Average mean = 5.6

No. Of scores = 10

Mean = sum of no./ number of scores

Therefore 5.6 = sum of no. /10

Cross multiply

Sum of no. = 5.6 x 10

= 56

The sum of the number is 56

- 70

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