3) Newman Automobiles Manufacturing is considering two alternative investment proposals with the following data: Investment Useful life Estimated annual net cash inflows for 8 years Residual value Depreciation method Required rate of return Proposal X $12,000,000 8 vears $2,000,000 $60,000 Straight-line 12% Proposal $600,000 8 years $95,000 $30,000 Straight-line 10% Calculate Pay back period for Proposal X and Proposal Y