See this is a problem which is faced by almost every person who is starting for the Joint Entrance Examination. The best way out of this problem is that look at a lot of solved examples and then try those problems by yourself. When you look at solved examples, you get a feel of how the problems are solved and you get a better insight about how to go about similar questions.

Do solved examples and see how you transform your test taking abilities.

Hope I have answered your question. All the best!