A baker uses 2/3 cup of rye flour in each loaf of bread. How many cups of rye flour will the baker use in 6 loaves? In 8 loaves? In 13 loaves.

if 2/3 is in 1 loaf
x in 6
12/3=x
x=4
4 cups in 6 loaves
y in 8
16/3=y
16/3 cups in 8 loaves
z in 13
26/3=z
26/3 cups in 13 loaves
x=4
y=5.33
z=8.666