Tesla is under contract to Montgomery County for evaluating alternatives that use a robotic, liquid-propelled "pig" to periodically inspect the interior of buried potable water pipes for leakage,...

Tesla is under contract to Montgomery County for evaluating alternatives that use a robotic, liquid-propelled "pig" to periodically inspect the interior of buried potable water pipes for leakage, corrosion, weld strength, movement over time, and a variety of other parameters. Twc equivalent robot instruments are available. Robot Joeboy will have a first cost of P 4,590,000, annual M&O costs of P 1,620,000, and a P 2,160,000 salvage value after 3 years. Robot Watcheye will have a first cost of P 6,570,000, annual M&O costs of P 1,458,000, and a P 1,782,000 salvage value after its 5-year life. By how much is the difference in the future worth of two robot instrument if interest rate is 13%?