Accounting treatment

umesh (Student CA Final ) (147 Points)

01 June 2016  
An Air conditioner(A/c) distributor sells an A/c to its customer in exchange of their old A/c by giving them discount of 3k. this old A/c's are sold/scrapped @ 4k or 5K. so how the transaction to be recorded in books of accountss?? thanks in anticipation