A new bar code reading device has been installed cost basics of $ 20490 and an estimated service life if 7 years .What will be the depreciation charge be in year seven

$2,721.28  

Explanation:

Use the following formula to calculate the depreciation expense

Depreciation Expense = Net book Value x 2 / Estimated service life

All the working is attached with this answer please find the attached file

The Question is incomplete, complete question is provided below

A new bar code reading device has been installed cost basis of $ 20490 and an estimated service life if 7 years. It will have a zero salvage value at that time. The 200% declining balance method is used to depreciate this asset.

What will the depreciation charge be in year seven?

answer; ///(gordon allport)

right of the table i believe