I buy equipment for my company at the end of the month, the seller tells me that it is only good for 6 months, I pay $300 for it, I know on the balance sheet that is a long term asset under PPE for $300 but since it's the end of the month and I used up one month would I add depreciation on the balance sheet of 50? Would my PPE be 250 instead of 300 since it was only good for 6 months and I used it all of August.