Cleavage- splits easily along flat surfaces.
Fracture- is smooth and curved or jagged with sharp edges.
http://wiki.answers.com/What_is_the_difference_between_cleavage_and_a_fracture#ixzz19zTPVGaj
89 - 21 = 68
It is 55 minus 21 = 34
21 is the answer
21
14
17.
4
21
10% difference.
35.2941% difference.
24
35