GMAT là một kỳ thi mà những thí sinh đạt điểm cao đều là những sinh viên xuất sắc khi vào học MBA (nếu không có những yếu tố khách quan khác). Điểm thi GMAT cũng dự đoán rất nhiều điểm các môn học trong chương trình MBA sau này (theo thống kê ở Mỹ là chính xác tới 90%) | Chapter 18 Explaining the Answers to Practice Test 1 283 37. B. To solve for t you need to know r in terms of s or s in terms of r so that one of the variables cancels out. Statement 1 gives a numerical value for r but doesn t let you know its value in terms of s so there are still two variables in the equation to solve for. Statement 1 isn t sufficient so neither A nor D can be right. Statement 2 gives you a value for r in terms of s so it s likely sufficient. You could choose B but if you want to check to make sure plug 3s in for r in the original equation t 9r r 2s 9 3s t 2s . 27s t 2s t 27 t 2 Statement 2 gives you enough information to solve for t. B is the correct answer. Explanatory Answers to the Verbal Questions 1. B. This critical-reasoning question asks you to weaken the cause-and-effect argument. To weaken this cause-and-effect conclusion you should select the answer choice that offers another logical cause for the effect or that calls into question whether the cause listed in j TVa the argument is actually responsible for the effect. Therefore choose an answer choice that weakens the link between the evidence on increasing household credit card debt and increasing bankruptcies. You can eliminate C because the premises don t mention housing values and C doesn t offer an alternative explanation for the increased bankruptcies. Get rid of D and E. Both strengthen the conclusion by providing more evidence for a link between credit card debt and bankruptcy. Choice A could be a possibility because it points out that people who file bankruptcy usually have other large debts like medical bills and legal bills. However Americans may have had medical and legal bills in the past and it may be the increased credit card debt that is actually causing people to have to file for bankruptcy. Choice B is the best answer. If many of the bankruptcies are business bankruptcies they probably aren t related to household credit card debt. 2. E. This critical-reasoning question
