A computer is depreciated using a flat rate depreciation method. It was purchased for $2800 and depreciates at the rate of 8%per annum. The amount of depreciation after 4 years is

Step 1 ：A computer is depreciated using a flat rate depreciation method. It was purchased for $2800 and depreciates at the rate of 8% per annum. The amount of depreciation after 4 years is calculated as follows:

Step 2 ：The flat rate depreciation method means that the asset depreciates by a fixed percentage each year. In this case, the computer depreciates by 8% each year.

Step 3 ：To find the amount of depreciation after 4 years, we need to multiply the initial cost of the computer by the depreciation rate and then by the number of years.

Step 4 ：Let's denote the initial cost as \(C\), the depreciation rate as \(r\), and the number of years as \(n\). Then the depreciation \(D\) can be calculated as \(D = C \times r \times n\).

Step 5 ：Substituting the given values, we get \(D = 2800 \times 0.08 \times 4\).

Step 6 ：Solving this, we get \(D = 896\).

Step 7 ：Final Answer: The amount of depreciation after 4 years is $896. So, the final answer is \(\boxed{896}\).