Q.The Pass Book of a trader showed a credit balance of ₹20,000 as on 30th June 2024. On comparison with the Cash Book, the following were found:

This problem reverses the usual direction — it starts from the Pass Book and works backward to the Cash Book, so every item's treatment must be looked up in the 'Pass Book → Cash Book' column of the master rule table.

Starting from ₹20,000: Add cheques deposited not yet collected (₹3,500) and the bank-paid insurance premium not yet in the Cash Book (₹800) = ₹24,300; then Subtract cheques issued not presented (₹4,000), interest collected by the bank (₹600) and the customer's direct deposit (₹1,200) = ₹5,800, leaving ₹18,500.

Bank Reconciliation Statement as on 30th June 2024 (starting from the balance as per Pass Book)

Reasoning for each item (Pass Book → Cash Book):

• (a) The Cash Book has already been credited (reduced) for the cheques issued; the Pass Book has not yet been reduced (cheque not presented) — so the Cash Book is LOWER than the Pass Book by ₹4,000; subtract, to bring the Pass Book figure down to the Cash Book figure.
• (b) The Cash Book has already been debited (increased) on deposit; the Pass Book has not yet been credited — the Cash Book is HIGHER by ₹3,500; add.
• (c) The Pass Book already includes this interest; the Cash Book does not — the Cash Book is LOWER by ₹600; subtract.
• (d) The Pass Book has already been reduced for this premium; the Cash Book has not — the Cash Book is HIGHER by ₹800; add.
• (e) The Pass Book already includes this direct deposit; the Cash Book does not — the Cash Book is LOWER by ₹1,200; subtract.

Check (working the other way, Cash Book → Pass Book, to confirm): 18,500 + 4,000 (cheques issued not presented) + 600 (interest collected) + 1,200 (direct deposit) − 3,500 (cheques not collected) − 800 (insurance premium) = 18,500 + 5,800 − 4,300 = 20,000, which matches the given Pass Book balance exactly.

It is easy to accidentally apply the 'Cash Book → Pass Book' treatment to a 'Pass Book → Cash Book' problem. As a safety check, always re-run the reconciliation in the OPPOSITE direction using the answer you found — if it reproduces the given opening balance exactly (as shown above), the treatment was applied correctly.

The most frequent mistake in a Pass-Book-to-Cash-Book problem is applying the same Add/Less treatment used for a Cash-Book-to-Pass-Book problem without reversing it — every item's direction must be flipped when the starting point changes.