The greates amount of pieces he would be able to use would be 9 because 8 divided by 5/6= 9 and 3/5.the 3/5 piece is too short.
Yy=5(xx)
works because lets say you need 3 cups of sugar. 3x5 is 15 which is exactly the number of cups of flour you would need
Hopes this helps:
Answer: x = 6
X=2/4=1/2
s=1 1/2
r= 1/2
y= 2/7
w= 1 2/3
p=2/5
Hope this works i can't see the others ok?