Posted by Chelsea on Thursday, February 26, 2009 at 5:57pm.
Mean is the average of a set of numbers. So add and divide by the number of digits you added. This is little different. Let see here....50+60+40+80=230 / 4 = 57.5 close....hmmmm....Trial and error...230+60=300 / 5 =
Hint: The sum for the five numbers will have to be 300 if the mean is to be 60.
With the first four numbers, the sum is 230. What do you have to add to that to get 300?
oops i meant 230 + ? = 300 /5 = 60
Thank you
133devided by14
how to write a sum in simplest form.
21
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