You have been asked by your construction client to prepare a cost model for the annual depreciation of a crane costing $$250,000.$ The productive life of the crane is $10$ years,

The client would like to see a comparison of the cash flows using the ATO Prime Cost Method

$($Straight line constant $ write$-$off$)$ and ATO Diminishing Value Method $($constant $\%$ write$-$off$).$

Your reading of the ATO Guide on depreciation, confirmed by your accounting colleagues, has determined that for a $10$ year life, the ATO allowed write$-$off is $10\%$ for constant $ write$-$off and $20\%$ for constant $\%$ write$-$off.