Book value of Debts

when 1% doubtful debts amounts to rs9000 and in Balance sheet if Drs are shown as 891000 given after proving 1% on doubtful debts  find out 100% drs which will be 900000 

Here I took example of provision for doubtful debts alone but if u take both say provision for baddebts 2% ,provsion for doubtful debts 1%  balance in Balance sheet will be 97% of drs to get 100% of book value find out accordingly

hope i made u clear to some extent