Hey

See it's not about studying by counting hours. You should keep in mind every aspect like regular studying, revising, concentration etc. For subjects like accounts and if you have selected maths also , for both subjects you need regular practice. These both subjects are scoring Subjects and you can score 100 % marks that will add to your aggregate score.

For subjects like O. C. You must have concepts clear . For economics you must read daily news paper.

In this way if you study 5-6 hours per day you will get desired results.