PROBLEM 20 While closing its books of account on 31st March, 2010 a Non-banking Finance Company has its advances classified as follows: in lakhs Standard Assets 16,800 Sub-standard Assets 1,340 Secured Positions of Doubtful Debts : - upto one year 320 -- one year to three years 90 - more than three years 30 Unsecured Portions of Doubtful Debts 97 Loss Assets 48 Calculate the amount of provision, which must be made against the Advances