double entry and book keeping

Kindly help, i usually get confused though i watched the lecture. My question is I managed to answer all the other questions except for the two.

To extract the TB you enter the information in appropriate ledger accounts. am not sure about the following:

1. Depreciation charge of K1,500. I, DR depr expense a/c $1,500
CR statement OFP $ 1,500
Which on do r record in the trial balance?

2. cash prepaid of $900 for rent and owing amounting to $500 for water. This one got me confused on how to write the ledger accounts and what to record for the trial balance.

kindly explain sir.