u can prepare for accounts n law using the study material ..for economics u can use "business economy "book by sankaran....for QT paper concentrate much on statistics part..it is comparatively easy...
U should attend minimum of 60+40+50+20' =170/200
' - that is u should attend minimum of 20 question in qt...concentrate on statistics n do some problems on Si,..Ci...But attend those sumin which ur 100% sure....
There is a solved scanner available in market written by CA amar ..CA Rasika goenka...
If u find difficulty in study material wrt to accounts use any fin a/cing book written for b.com ..The 40 marks in law is just like a cake walk ...study the material atleast 3-4 times..
All the best..dont get dis-appointed for failing in exam.. this kind of thing always happen in life.. ..work hard .u will clear..always tell ur heart that "miles to go'...