I am having a warm time with the datasufficency questions may be I need to take a break from data sufficency and go to another section. In particular its a question in the gmat review guide on page 287 question 161. Sometimes I think if I dont read the strategies in the review books on tackling ds questions I would be better of doing it on my own interpretations. Of doing these types of problems. What is the best strategy to solving ds problems ?