Step 1: Start from the answer and work backward as a verification-first approach:
The closing balance (Rs. 20,000) minus the opening balance (Rs. 5,000) must equal the net change in cash for the year, i.e. Rs. 15,000 — so whatever the three activities sum to, they must net to exactly this figure.
Step 2: Bucket every line item into its activity, and total each bucket independently:
Operating bucket: +1,50,000 (customers) −50,000 (suppliers) −3,000 (overheads) −15,000 (wages) −10,000 (tax) = +72,000.
Investing bucket: +33,000 (asset sale) −60,000 (asset purchase) = −27,000.
Financing bucket: +10,000 (shares) −35,000 (loan repayment) −5,000 (dividend) = −30,000.
Step 3: Sum the three buckets and confirm it matches the expected change from Step 1:
72,000 − 27,000 − 30,000 = 15,000, which exactly equals the Rs. 15,000 change required — confirming every item was classified and totalled correctly.
Final Answer:
Operating: Rs. 72,000 net inflow; Investing: Rs. 27,000 net outflow; Financing: Rs. 30,000 net outflow; combined net change = \[ \boxed{Rs.\ 15{,}000} \] increase, taking cash from Rs. 5,000 to Rs. 20,000, matching the given closing balance exactly.