I have a number, lets say 80. I want to find other values, lets say 10 number
values, between 50 and 100 such as that those numbers added have an average
of 80.

In other words:

a + b + c + d + e + f + g +... = 80
How can I find random values between 50 and 100 (a, b, c, d, etc) whose
average is 80.
Is it possible in Excel 2000?
thank you.
Daniel Lugones