GRE考试

根据网考网考试中心的统计分析，以下试题在2019/8/7日GRE考试习题练习中，答错率较高，为：84%
【单选题】

Last year Leo bought two paintings. This year he sold them for $2000 each. On one, he made a 25% profit, and on the other he had a 25% loss. What was his net loss or profitA、He broke even.

B、
B、He lost less than $100.
C、He lost more than $100.
D、He earned less than $100.
E、He earned more than $100.

网考网参考答案：C，答错率：84%
网考网试题解析：
On the first painting, Leo made a 25% profit, so if he bought it for x, he sold it for x + .25x = 1.25x = 2000 x = 2000 + 1.25 = 1600. His profit was $400. On the second painting, Leo lost 25%, so if he bought it for y, he sold it for y -.25y = .75y = 2000 y = 2000 + .75 = 2666.67. His loss was $666.67. In all, he lost $266.67, which is more than $100. **In these types of problems you never break even. Eliminate A. When you make a profit, your purchase price is less than your selling price, and when you incur a loss, your pur-chase price is greater than your selling price. So the first painting cost less than $2000 and the second cost more than $2000. So Leo earned 25% of a small amount and lost 25% of a large amount. He surely lost money. Eliminate D and E. If you can’t solve as above, guess between B and C. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>