Hi bfarooq,
CR prompts are always fairly 'thin' (in terms of their length AND in the information that they offer). As such, you might consider them to be 'flawed', or you might consider them to be 'missing something.' Regardless of how you view them, your task is always explicitly stated directly underneath the prompt: define an assumption behind the prompt, make the logic stronger/weaker, infer something from the information, etc. Pay careful attention to the details that offered and you should be able to 'link them' and get the logic behind the prompt. With that logic, you should be able to answer any question that is asked.
GMAT assassins aren't born, they're made,
Rich