A+sample+of+hamburger+had+a+total+mass+of+200.+g,+of+which+30.0+g+was+found+to+be+fat.+what+is+the+percent+of+fat+in+this+hamburger+sample?
a. 15.0%
b. 30.0%
c. 6.00%
d. 13.3%
e. 6.67%