If the is recorded R250 000 of depreciation expense in December 2005. What is the most likely effect on the company's accounting equation and how do

If the is recorded R250 000 of depreciation expense in December 2005. What is the most likely effect on the company's accounting equation and how do i go about getting the calculation?
if i sell products to customers on 30 June 2006 for a total price of R10 000. The terms of the sale are that payment is due in 30 days. The cost of the products was R8 000. What is the most likely net change in the company's total assets on 30 June 2006 related to this transaction?
If i paid R12 000 of cash to a real estate company upon signing a lease on 31 December 2005. The payment represents a R4 000 security deposit and R4 000 of rent for each of January 2006 and February 2006. Assuming that the correct accounting is to reflect both January and February rent as prepaid, what is the most likely effect on the company's accounting equation in December 2005?