"GRE 数学机经：某品牌洗碗液两种瓶装的价格比较"

The kmf GRE Math Subject Test 200 question machine, which is a collection of GRE math resources, contains a variety of questions that are useful for students preparing for the GRE exam. One of the questions in the machine involves a certain brand of dishwashing liquid that is sold in two different bottle sizes. The small bottle has 2/5 as many ounces of liquid as the large bottle and is sold at a price that is 1/2 the price of the large bottle. The question asks to compare the price per ounce of the liquid in the small bottle with the price per ounce of the liquid in the large bottle. To solve this problem, we can set up a system of equations to represent the relationship between the two bottle sizes. Let's assume that the large bottle contains x ounces of liquid and is sold at a price of P dollars, while the small bottle contains 2/5x ounces of liquid and is sold at a price of P/2 dollars. Using this information, we can set up the following equation to represent the relationship between the two bottle sizes: 2/5x * (P/2) = x * P Solving for the price per ounce of liquid in each bottle, we find that Quantity A is equal to P/2x and Quantity B is equal to P/x. Therefore, Quantity A is greater than Quantity B. In conclusion, the problem from the kmf GRE Math Subject Test 200 question machine involves comparing the price per ounce of dishwashing liquid in two different bottle sizes. By setting up a system of equations and solving for the price per ounce in each bottle, we find that Quantity A is greater than Quantity B. This type of problem is typical of the types of questions that may appear on the GRE exam and requires both mathematical reasoning and problem-solving skills. Students can use resources such as the kmf GRE Math Subject Test 200 question machine to practice and prepare for similar problems encountered on the GRE exam.