**Debit Balance as per Cash Book**

The debit balance as per the cash book of ABC Co. on 31.3.2020 is 1500. This means that the company has more payments (outflows) than receipts (inflows) during the given period.

**Cheque Deposited but not Cleared**

A cheque deposited but not cleared is an amount that has been received by the company but has not yet been credited to the bank account. In this case, the amount is 100. This means that the company has received a cheque for 100 but it has not been processed by the bank yet.

**Cheques Issued but not Presented for Payment**

Cheques issued but not presented for payment are amounts that have been paid by the company but have not yet been debited from the bank account. In this case, the amount is 150. This means that the company has issued cheques amounting to 150, but they have not been presented to the bank for payment yet.

**Balance as per Pass Book**

To calculate the balance as per the pass book, we need to adjust the cash book balance for the items that have not yet been reflected in the bank statement.

1. Add the cheque deposited but not cleared: 1500 + 100 = 1600
2. Deduct the cheques issued but not presented for payment: 1600 - 150 = 1450

Therefore, the balance as per the pass book should be 1450.

**Explanation**

The cash book records all the cash and bank transactions made by the company. It is maintained by the company and provides a record of all the cash inflows and outflows.

The pass book, on the other hand, is a statement provided by the bank that shows all the transactions related to the bank account. It includes deposits, withdrawals, and other bank charges.

In this case, the cash book balance is 1500, but there are certain transactions that have not yet been reflected in the bank statement. The cheque deposited but not cleared is an inflow that has not yet been credited to the bank account, while the cheques issued but not presented for payment are outflows that have not yet been debited from the bank account.

To calculate the balance as per the pass book, we need to adjust the cash book balance for these items. By adding the cheque deposited but not cleared and deducting the cheques issued but not presented for payment, we arrive at the balance as per the pass book.

This adjustment is necessary to reconcile the differences between the cash book and the bank statement and ensure that both records reflect the true financial position of the company.