How can I score good marks in maths and economics?

Practice makes a man perfect and same is the case in maths. Keep solving questions on daily basis and try to solve the difficult part and whenever you feel demotivated try solving the moderate level questions. It will keep you motivated. Talking about economics, don't take this subject as something

The only way to score marks in Maths and economics is to practice. Both the subjects need a lot of practice. Solve as much as previous years paper and understand the type of question and the values will definitely vary. Study at the most productive time of the day. Depending upon your comfort.