The right answer doesn't have to disprove the argument; it only needs to make it less convincing. This is usually done by attacking assumptions or introducing new counter-premises. Since the only supporting evidence is a correlation between a previous eruption and a cold winter, the right answer wil...

The answer is D. I go through the question in detail in the full solution below (taken from the GMATFix App).



-Patrick

(1) is not sufficient since we have no restriction on when the machine finished the job. (2) is sufficient. It tells us how much work has been completed at two points in time, so we know how fast the machine works and we can project how much longer it will take to finish the job. The answer is B. I ...

To solve we need to understand 2 things: > Prob(success) + Prob(failure) = 1 for each individual > Prob(independent events A and B both happen) = Prob(A) * Prob(B) The answer is E. I go through the question in detail in the full solution below (taken from the GMATFix App ). http://www.gmatfix.com/vi...

This is a Resolve-Explain (Resolve the Paradox) question. The right answer will explain why small-business groups oppose raising the minimum wage even though the law would exempt them from paying the new wage. These businesses must expect a negative outcome (negative for them) from the law that the ...

The correct answer must correctly use the idiom "rivalry between x and y" where x and y are parallel. The answer is C. I go through the question in detail in the full solution below (taken from the GMATFix App).



-Patrick

You are over-thinking it Daniel. Profit is always total revenues - total expenses. Think in real world terms. If you buy a toy for $100, and the manufacturer gives you a 50% refund, what did you actually spend? Only $50!. The problem with your formula is that at the end of the day, the merchant did ...

50(2/5)+x(3/5)= 60 x=70 But the answer should be 75.Please explain this case and why weighted averages dont work here. Hi Daniel, The guys above explained good ways to solve; I just wanted to address your question about why your method did not work. In fact, weighted average does work . It is good ...