Answer:
Correct answer is option C i.e 28 minutes
Step-by-step explanation:
Number of students arriving at adviser's office per hour = x = 28
Number of students get approved = [tex]\frac{1}{2min}[/tex] = 30/hour
∴ y = 30
Number of students on average on waiting =Lq
Lq = [tex]\frac{x^{2} }{y(y-x)}[/tex]
= [tex]\frac{28^{2} }{30(30-28)}[/tex]
= 13.07
Average time student has to spend in
Waiting = Wq = [tex]\frac{x}{y(y-x)}[/tex]
= [tex]\frac{28}{30(30-28)}[/tex]
= 0.466 hours
= 28 minutes
