math
posted by andra .
nisha is putting 64 cookies and 40 truffles into gift boxes. Each box willhave the same number of cookies and chocolate truffles. What is the reatest number of boxes Nisha can make with no cookies or chocolate truffles left over?
I guessed 8 because it goes into 64 and 40  but I don't know how and need to show work for this. Is it right anyway?

The greatest common factor of 64 and 40 is 8.
http://www.mathsisfun.com/greatestcommonfactor.html