Final answer:
The opening balance of the prepayments account will be $8,100 and the closing balance will be $0.
Step-by-step explanation:
The opening balance of the prepayments account will be $8,100 and the closing balance will be $0.
To calculate the opening balance, we need to add up the rent bills that have been paid in advance up to the beginning of the year.
In this case, the rent bills paid in advance are $2,100 from Nov 20X6 - Jan 20X7 and $2,100 from Oct 20X6 - Feb 20X7. Therefore, the opening balance is $2,100 + $2,100 = $4,200.
Now, to calculate the closing balance, we need to subtract the rent bills that have been paid in advance but haven't been used up yet.
In this case, the rent bills that haven't been used up yet are $2,400 from Nov 20X7 - Jan 20X8 and $2,400 from Feb 20X8. Therefore, the closing balance is $4,200 - $2,400 - $2,400 = $0.