Jeffrey J Steckroth-GMAT Session 1【荐】.ppt

52. Kelly and Chris packed several boxes with books. If Chris packed 60 percent of the total number of boxes, what was the ratio of the number of boxes Kelly packed to the number of boxes Chris packed? A) 1 to 6 B) 1 to 4 C) 2 to 5 D) 3 to 5 E) 2 to 3 73. In the Johnson’s monthly budget, the dollar amounts allocated to household expenses, food and misc. items are in the ratio of 5:2:1, respectively. If the total amount allocated is $1800, what is the amount allocated for food? 900 720 675 450 225 99.On a scale that measures the intensity of a certain phenomenon, a reading of n + 1 corresponds to an intensity that is 10 times the intensity corresponding to a reading of n. On that scale, the intensity corresponding to a reading of 8 is how many times as great as the intensity corresponding to a reading of 3? 5 50 105 510 810 - 310 5. A restaurant meal cost $35.50 and there was no tax. If the tip was more than 10 percent but less than 15 percent of the cost of the meal, then the total amount paid must have been between $40 and $42 $39 and $41 $38 and $40 $37 and $39 $36 and $37 A car dealer sold x used cars and y new cars during May. If the number of used cars sold was 10 greater than the number of new cars sold, which of the following expresses this relationship? (A) x t 10 y (B) x y – 10 (C) x y – 10 (D) x = y + 10 (E) x = y - 10 120. David has d books, which is 3 times as many as Jeff and ? as many as Paula. How many books do the three of them have altogether, in terms of d ? 41. If x = 1 – 3t and y = 2t – 1, then for what value of t does x = y ? If y = (x – 3)2, then y is lowest when x = (A) 14 (B) 13 (C) 0 (D) 3 (E) 4 58. If x2 = 2y3 and 2y = 4, what is the value of x2 + y? (A) -14 (B) -2 (C) 3 (D) 6 (E) 18 In a certain furniture store, each week Nancy earns a salary of $240 plus 5 percent of the amount of her total sales that exceeds $800 for the week. If Nancy earned a total of