The old mean was 51 now the mean is 42.33... (round that to 42) 51 - 42 = 9
81- answer is ok but im not suree
Subtract 
from both sides to get
Multiply 0.75 by 100
75 %
2/3,2/6,2/8
23 is the greatest because it has larger pieces
2/6 is the second greatest because it is a little smaller than thirds
2/8 is the least because it has the smallest pieces
