<PRE><B>Question 920687</B>
Makes poor sense.  How much fat was in the cream?  What is your data to relate the fat to the cream?  


You are probably hoping to symbolize the description and question this way, ignoring the meaning of fat and cream:


Let c be the amount of cream AS VOLUME, to be removed.


{{{highlight_green((12*76-c)/(12-c)=68)}}};
Solve for c.</PRE>