?The original cost of a warehouse is $200,000.$ ?Patty is proposing a decrease in the useful life from $25$ ?years to $20$ ?years, and a decrease in residual value from $10,000$ ?to $6,000.$ ?Using Microsoft excel, show what the depcreciation charges will be before and after the changes are adopted if using the straight line method $10\mathrm{.}5$ ?Effects of changes in estimates on depreciation expense

At the end of each year, Patty Chu, the chief accountant at Rex Lin Enterprises, a

Singapore$-$based trading company, reviews long$-$term assets at the end of each year to

determine whether changes are called for in how these assets are depreciated. In December

$2011,$ ?her attention focused on two assets in particular:

Patty is proposing the following changes:

For the warehouse: a decrease in the useful life to $20$ ?years, and a decrease in residual

value to $$6000.$

For the building: an increase in the useful life to $50$ ?years, and a decrease in the residual

value to $$55000.$

Before agreeing to the changes, Patty's bosses would like to know what the deprecia$-$

tion charges will be for each asset if the changes are adopted. All assets are depreciated

using the straight$-$line method.