Two bridge designs have been proposed for the new interstate…

Two bridge designs have been proposed for the new interstate highway to cross Caney Fork river near Carthage, Tennessee A bridge constructed from wood will cost $6000 and will last for eight years. A bridge constructed from steel will cost $11,000 and will last for twenty years. Either bridge will have a zero salvage value at the end of its life. Use an interest rate of 8% and determine whether the increased life of the steel bridge justifies its increased cost. What is the result of the analysis?

Extra Credit Question. Extra credit points are not included…

Extra Credit Question. Extra credit points are not included in the immediate score provided. This is part B of a two part question. (You must have part A correct to get credit for part B.) New equipment comes with a maintenance agreement that covers breakdown costs for the first two years, then the maintenance agreement cost $2000 per year payable at the beginning of the year.  Routine maintenance is not covered on the contract and is estimated to cost $1500 every year.  The expected life of the equipment is 10 years and interest rate is 6%.  Part B:  What is the present worth of the maintenance?