Harnischfeger Corp. Article

Please read Harnischfeger Corp.article and answer each question below:
Harnischfeger

1. Describe clearly each the accounting changes Harnischfeger made in 1984 as stated in
   Note 2 of its financial statements
2. What is the monetary effect of the depreciation accounting method change on the
   reported income in 1984? How and by how much ($) will this change affect profits in
   future years?
3. What is the monetary effect of the depreciation lives change? How and by how much
   ($) will this change affect future reported profits?