An American multinational company is now considering two mutually exclusive alternatives for the environmental protection equipment at its manufacturing plant in the United Kingdom. One of these alternatives must be selected. The estimated cash flows for each alternative are listed in the below table.

	Alternative A	Alternative B
Capital investment	20,000	38,000
Annual expenses	5,500	4,000
Market value at end of useful life	1,000	4,200
Useful	5 years	10 years

Assume that the equipment will be needed indefinitely and the firms MARR relative to British pound (GBP) is 20% per year.

If the inflation rate in the United Kingdom is 3.5%, what is the real rate of MARR (in percentage) relative to British pound (GBP)?