Three different companies eacn purchased tucks on Janyory $1$Yeer$1$ for $$74\mathrm{.}000.$ Eacn truckwaa expecceda auryeale or

$250,000$ miles Salvage value was estimated to be $$6\mathrm{.}000$ Al three trucks were driven $80\mathrm{.}000$ miles in Year $1,60\mathrm{.}009662$ ear

$45,000$ miles in Year $3,$ and $70,000$ miles in Year $4.$ Each of the three companies earned $563,000$ of cash revenue during each ot the four years. Company A uses straightline depreciation, company Suses double declining$-$balance depreciation, and company Cuses units of production depreciation.