Correct answers are below but I do not know how to get them. Help me show work please. Thank you!

\begin{tabular}{cccccc} Truck No. & Cost & Estimated Residual Value & Estimated Useful Life & Accumulated Depreciation at Beginning of Year & Miles Operated During Year \\ \hline 1 & $100,000 & $13,000 & 300,000 & & 30,000 \\ 2 & 72,900 & 9,900 & 300,000 & $60,000 & 25,000 \\ 3 & 38,000 & 3,000 & 200,000 & 8,050 & 45,000 \\ 4 & 90,000 & 13,000 & 200,000 & 20,150 & 40,000 \end{tabular} round your answers to one decimal place. 1. Based on the units-of-output method, determine the depreciation rates per mile and the amount to be credited to t required, round your answers to one decimal place