GV is a small accounting firm supporting wealthy individuals in their preparation of annual income tax statements. Every December, GV sends out a short survey to their customers, asking for the information required for preparing the tax statements. Based on 50 years of experience, GV categorizes their cases into the following two groups:

Group 1 (new customers): 20% of cases

Group 2 (repeat customers): 80% of cases

This year, there are 50 income tax statements arriving each week. In order to prepare the income tax statement, GV has three resources. The activities are carried out by the following three persons:

An administrative support person that processes every tax statement.

Senior accountant (who is also the owner): who processes only tax statements for new customers

Junior accountant: who only processes tax statements for repeat customers.

Processing times for both groups and all resources are shown in the table below. Assume that everyone works 40 hours per week.

	Group		Administrator [min/unit]		Handling by senior accountant [min/unit]	Handling by junior accountant [min/unit]
	1		20		40	n/a
	2		20		n/a	15
		a.	Which of the three persons is the bottleneck?
				Administratorradio button unchecked
				Senior accountantradio button unchecked
				Junior accountantradio button unchecked
		b.	For a mix of 20:80 between new and old cases, what is the flow rate for new customers?					not attempted	new cases per week
		c.	For a mix of 20:80 between new and old cases, what is the flow rate for repeat customers?					not attempted	new customers per week
		d.	For a mix of 20:80 between new and old cases, what is the capacity for new customers?					not attempted	cases per week
		e.	For a mix of 20:80 between new and old cases, what is the capacity for repeat customers?					not attempted	cases per week