AMA CVP Doubt CA Final Chapter 2 Group II

Mohit Suresh (plus twov) (310 Points)

15 February 2018  
Can someone please explain why in problem no. 10 of Chapter 2 of AMA in PM depreciation is considered for finding out incremental cost, why the value taken was not 1420000 in case of old machine and if the value was taken 1065000 in case of old machine then why is there an incremental benefit of 355000?