Straightforward net-present-value and payback computations

STL Entertainment is considering the acquisition of a sight-seeing boat for summer tours along the Mississippi River. The following information is available:

Cost of boat $500,000
Service life 10 summer seasons
Disposal value at the end of 10 seasons $100,000
Capacity per trip 300 passengers
Fixed operating costs per season (including straight-line depreciation) $160,000
Variable operating costs per trip $1,000
Ticket price $5 per passenger

All operating costs, except depreciation, require cash outlays. On the basis of similar operations in other parts of the country, management anticipates that each trip will be sold out and that 120,000 passengers will be carried each season. Ignore income taxes.

Instructions:
By using the net-present-value method, determine whether STL Entertainment should acquire the boat. Assume a 14% desired return on all investments- round calculations to the nearest dollar.

5. Equipment replacement decision
Columbia Enterprises is studying the replacement of some equipment that originally cost $74,000. The equipment is expected to provide six more years of service if $8,700 of major repairs are performed in two years. Annual cash operating costs total $27,200. Columbia can sell the equipment now for $36,000; the estimated residual value in six years is $5,000.
New equipment is available that will reduce annual cash operating costs to $21,000. The equipment costs $103,000, has a service life of six years, and has an estimated residual value of $13,000. Company sales will total $430,000 per year with either the existing or the new equipment. Columbia has a minimum desired return of 12% and depreciates all equipment by the straight-line method.