QUESTION $17$Suppose operation x feeds directly into operations y All of x$\text{'}$s output goes to y$,$ and y has no other operations freding into it x has a design capacity of $80$ units per hour and an effective capacity of $72$ units per hour y has a design capacity of $100$ units per hour. What is Y$\text{'}$s maximum possible utilization?

$70$ percent

$90$ percent

$60$ percent

$72$ percent

$80$ percent