@ r.i.p

For cash budget go through Brigham’s Financial Management, the Chapters are on Capital Budgeting I suppose, I don’t have that book accessible now.
Dear rip I suggest prepare yourself topic wise from different foreign reliable books. You might have to prepare like “Partnership” from one book, “company Accounts” from another book and Ratio and Cash Budgeting from yet another book.

Then, only difficulty you should have is of terminology used in Pakistan, for that use and practice any good Pakistani book(s), this should not take more than five days for each paper. Pakistani books are all same get yourself anyone of them. Like I have M.A. Ghani’s Advanced Accounts, this is the best I could get in my city and is serving its purpose yet.

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Nor fame, nor power, nor love, nor leisure.
Others I see whom these surround—
Smiling they live, and call life pleasure;—
To me that cup has been dealt in another measure.