Q 5 of CA Final A/c (old)

Hii friends, i want to ask the solution of Q No. 5 of CA Final Accounts(Old), as in suggested trading cash flow is taken by just taking increase or decrease in Debtors, Crerditors,Expenses.

But as Parveen Sharma Sir has given us solution i have made proper a/c for Debtors, stock., Expenses....and find out sales made ....and so on, but that was quite lengthy, Do i still get marks in that Q.

Any body else who have solved that Q by making respective accounts...?