Posted by **Jordan** on Saturday, July 28, 2012 at 6:42pm.

In the list of five measurements shown below, one is blurred. What must this value be, if the mean of the five measurements is 7?

8 5 10 3 #

- Math -
**Brooke**, Saturday, July 28, 2012 at 6:48pm
The blurred out number is 9.

- Math -
**Brooke**, Saturday, July 28, 2012 at 6:51pm
How I got the answer:

8+5+10+3= 26

Since there were 5 sets of numbers I did 35-26 (because 7 times 5 is 35) which is 9. So when you add them up, it would be :

8+5+10+3+9= 35

35/5 = 7

Therefore, the answer is 9.

Hope this helps!

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