Equipment acquired on January 5, at cost of 1,177,200, has an estimated residual value of 15 years, has an estimated residual value of $ 97,200, and is depreciated by the straight-method.
a. What was the book value of the equipment at December 31, 2012, the end of the year?
(I got this answer.. $ 889,200)

b. Assume that the equipment was sold on April, 2013, for $801,500.

If someone can help me out with the b. I really don't know a lot of accounting I tried some many ways to get the answer but I can't.. I though this is a "basic accounting"... but it seems that is advance accounting... I will appreciate any help!

This is a duplicate post and there is a response with the steps involved to solve the problem on the other post.