Net Present ValueUnequal Lives

Bunker Hill Mining Company has two competing proposals: a processing mill and an electric shovel. Both pieces of equipment have an initial investment of $808,189. The net cash flows estimated for the two proposals are as follows:

	Net Cash Flow
Year	Processing Mill		Electric Shovel
1	$246,000		$308,000
2	219,000		285,000
3	219,000		263,000
4	175,000		271,000
5	133,000
6	111,000
7	96,000
8	96,000

The estimated residual value of the processing mill at the end of Year 4 is $310,000.

Present Value of $1 at Compound Interest
Year	6%	10%	12%	15%	20%
1	0.943	0.909	0.893	0.870	0.833
2	0.890	0.826	0.797	0.756	0.694
3	0.840	0.751	0.712	0.658	0.579
4	0.792	0.683	0.636	0.572	0.482
5	0.747	0.621	0.567	0.497	0.402
6	0.705	0.564	0.507	0.432	0.335
7	0.665	0.513	0.452	0.376	0.279
8	0.627	0.467	0.404	0.327	0.233
9	0.592	0.424	0.361	0.284	0.194
10	0.558	0.386	0.322	0.247	0.162

Determine which equipment should be favored, comparing the net present values of the two proposals and assuming a minimum rate of return of 10%. Use the present value table appearing above.

	Processing Mill	Electric Shovel
Present value of net cash flow total	$	$
Less amount to be invested	$	$
Net present value	$	$

Which project should be favored? Processing Mill

Project 1 requires an original investment of $113,800. The project will yield cash flows of $16,000 per year for nine years. Project 2 has a calculated net present value of $24,900 over a seven-year life. Project 1 could be sold at the end of seven years for a price of $77,000.

Use the Present Value of $1 at Compound Interest and the Present Value of an Annuity of $1 at Compound Interesttables shown below.

Present Value of $1 at Compound Interest
Year	6%	10%	12%	15%	20%
1	0.943	0.909	0.893	0.870	0.833
2	0.890	0.826	0.797	0.756	0.694
3	0.840	0.751	0.712	0.658	0.579
4	0.792	0.683	0.636	0.572	0.482
5	0.747	0.621	0.567	0.497	0.402
6	0.705	0.564	0.507	0.432	0.335
7	0.665	0.513	0.452	0.376	0.279
8	0.627	0.467	0.404	0.327	0.233
9	0.592	0.424	0.361	0.284	0.194
10	0.558	0.386	0.322	0.247	0.162

Present Value of an Annuity of $1 at Compound Interest
Year	6%	10%	12%	15%	20%
1	0.943	0.909	0.893	0.870	0.833
2	1.833	1.736	1.690	1.626	1.528
3	2.673	2.487	2.402	2.283	2.106
4	3.465	3.170	3.037	2.855	2.589
5	4.212	3.791	3.605	3.352	2.991
6	4.917	4.355	4.111	3.784	3.326
7	5.582	4.868	4.564	4.160	3.605
8	6.210	5.335	4.968	4.487	3.837
9	6.802	5.759	5.328	4.772	4.031
10	7.360	6.145	5.650	5.019	4.192

a. Determine the net present value of Project 1 over a seven-year life with residual value, assuming a minimum rate of return of 6%. If required, round to the nearest dollar. $

b. Which project provides the greatest net present value? Project 1