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Blossom Taxi Service uses the units$-$of$-$activity method in computing depreciation on its taxicabs. Each cab is expected to be driven $140,000$ miles. Taxi $10$ cost $$25,400$ and is expected to have a salvage value of $$200.$ Taxi $10$ was driven $27,000$ miles in $2024$ and $30,000$ miles in $2025.$

$($a$)$

Determine the depreciation cost per mile. $($Round answer to $2$ decimal places, e$.$g$.1\mathrm{.}25.)$

Depreciable cost per mile