The Following Information Is Available from Sheldon Corp $\text { Information from the Balance Sheet: }$

The following information is available from Sheldon Corp.:
$\text { Information from the Balance Sheet: }$

$\begin{array}{llll}&2012&2011\\\text { Depreciable Assets } & \$ 2,458,600 & \$ 1,985,400 \\\text { Accumulated Depreciation } &\underline{ (1,350,700)} & \underline{(1,046,000 )}\\\text { Depreciable Assets(Net) } & \$ 1,107,900 & \$ 939,400\end{array}$ $\begin{array}{llcc} \text {From the Income Statement } & 2012 \\ \text { Depreciation Expense } &\$384,500\\\end{array}$
Use the information above to calculate the following:
a. Average age of the depreciable assets
b. Average remaining useful life of the depreciable assets