$(2.)$ A company is consideving purchasing a new piece of manufacturing equipment. The equipment costs $$250000$ and is expected to generate annual cost savings of $$60000$ for $6$ years. Determine the IRR of this project. The company'j's MARR is $10\%.$

$3.$The cost of a portable sand compactor is Php $1\mathrm{.}2$ N and the cost of installation is thp $50000.$ If the salvage value is $10\%$ of the cost of the machine at the end of $10$ year, determine the book value at the. and of $3$ rd year. Use SLM$.$