Use the data envelopment analysis to measure the relative efficiency of the three fast food restaurant franchises located in three different cities in Kenya operated by the same owner. The owner wants to identify the relatively inefficient operations and try to improve their relative efficiency scores. The relevant information is given in the table below:

		Restaurants
Input measures	A	B	C
Weekly hours of operation	8 4	70	88
Daily number of employees	6	8	7
Daily cost of ingredients ()	2000	4000	3000
Output measures
Weekly profit ()	4000	3000	2500
Number of customers served/week	1500	1000	1200
City fast food market share (%)	30	20	15

Use DEA and identify the most efficient and inefficient fast food restaurants