图表题(真糟糕我的图表题一直是我的痛) Family X's expenditures as a percent of its gross annual income 1983 1984 Mortgage,Property Taxes, Insurance 24% 27% Food 7% 11% Utilities 4% 5% Automobile Expenses 5% 5% Savings 25% 12% Miscellaneous 3% 10% Income Taxes 32% 30% In 1983, 100% = $50,000 In 1984, 100% = $45,000 1. Family X's gross income is the sum of Mr. X's income and Mrs. X's income. In 1983 Mr. and Mrs. X each had an income of $25,000. If Mr. X's income increased by 10 percent from 1983 to 1984, by what percent did Mrs. X's income decrease for the same period? (A) 10% (B) 15% (C) 20% (D) 25% (E) 30% Ans: E 2. By approximately what percent did the amount that Family X put into savings decrease from 1983 to 1984? (A) 13% (B) 23% (C) 35% (D) 45% (E) 57% Ans: E If $4,500 was invested in a bond fund when the proce per share was $9 and #3,000 was invested in the fund when the price per share was $10, what was the average (arithmetic mean) price per share purchased? (A) $9.625 (B) $9.50 (C) $9.40 (D) $9.375 (E) $9.20 Ans: D (不懂题目的意思) n > 0 Column A Column B n(n+1)+n+1/(n+1)^2 1 Ans: C A rectangular rug covers half of a rectangular floor that is 9 feet wide and 12 feet long. If the dimensions of the rug are in the same ration as those of the floor, how many feet long is the rug? (A) 6 (B) 21/2 (C) 2√7 (D) 6√2 (E) 4√6 Ans: D IF X and Y are integers and X>Y>0, how many integers are there between but not including, X and Y? (A) X-Y (B) X+Y (C) X-Y-1 (D) X+Y-1 (E) X-Y+1 Ans: C --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 59.112.16.198