10 because if you take 56 divided by 9 that would equal 6.22222 so it would be 7 since you can’t have .222 shelves
Answer:
Step-by-step explanation:
(68+75+74+82+88+x)/6=70
(387+x)/6=70
x= 33
X=5/9
Y=0.65
See below the following picture for the solution