Am stuck in calculating this questions .

An investment project involves an initial investment, followed by five years with net cash inflows and a sixth year with a net cash outflow because the site used for the project will have to be repaired. The project's internal rate of return (IRR) has been calculated. There are two internal rates of return: 2% p.a. and 9% p.a. Explain how a project could have two internal rates of return and how this will affect the decision to accept or reject the project. [5]A software development company is considering raising funds to expand the business. The company's only significant asset is the office block that it uses to accommodate its programming and administrative functions. Explain the potential implications of raising funding through a sale and leaseback arrangement on the company's office block. [5]An individual purchases (100,000 nominal of a bond on 1 January 2003 which is redeemable at 105% in four years time and pays coupons of 4% per annum at the end of each year. The investment manager wishes to invest the coupon payments on deposit until the bond is redeemed. It is assumed that the rate of interest at which the coupon payments can be invested is a random variable and the rate of interest in any one year is independent of that in any other year. Deriving the necessary formulae, calculate the mean value of the total accumulated investment on 31 December 2006 if the annual effective rate of interest has an expected value of 512% in 2004, 6% in 2005 and 412 % in 2006. [5]