Page 491, Exercise 2

The w, c, and r values are as follows:

w00 = 20
c 00 = 0
r 00 = 0

w 11= 10
c 11 = 0
r 11 = 0
w22 = 30
c 22 = 0
r 22 = 0 		w33 = 5
c 33= 0
r 33 = 0 		w44 = 5
c 44 = 0
r 44= 0
w 01 =35
c 01 = 35
r 01 = 1		 w 12 = 50
c 12 = 50
r 12 = 2		 w23 = 35
c 23 =35
r 23=3 		w34 = 45
c 34 =60
r34 =3 		 
w 02 = 75
c 02 =110
r 02 =2		 w 13 =65
c 13 =100
r 13 =2		 w 24 = 45
c 24= 60
r 24 = 3