Solution and explanantion
Answer for Q7 - Debit balance of $1,370
Cash has a debit normal balance.
Practically speaking the cash balance will be credit only if cash is negative which can never happen.
Answer for Q8 - Credit balance of $1500
All equity accounts have credit normal balance except withdrawal or dividend accounts.
Answer for Q9 - Credit balance of $770
All liabilities have credit normal balance.
Answer for Q10 - $5000
Working
Trial balance
Debit Credit
Cash $1,370.00
Accounts receivable $ 1,600.00
Office equipment $ 900.00
Benson withdrawal $ 500.00
Benson capital $ 1,500.00
Accounts payable $ 770.00
Salaries expense $ 630.00
Service revenue $ 2,730.00
$ 5,000.00 $ 5,000.00