9. 1662-!-item-!-187;#058&002391 Equal amounts of water were poured into two empty jars of different capacities, which made one jar 1/4 full and the other jar 1/3 full. If the water in the jar with the lesser capacity is then poured into the jar with the greater capacity, what fraction of the larger jar will be filled with water?
(A) 1/7 (B) 2/7 (C) 1/2 (D) 7/12 (E) 2/3
ANS: C
larger jar 是说哪个阿？ 不是两个equal amout的 jar 吗？ ========================================
29. 3873-!-item-!-187;#058&003594 If n denotes a number to the left of 0 on the number line such that the square of n is less than 1/100, then the reciprocal of n must be
(A) less than -10 (B) between -1 and (C) between and 0 (D) between 0 and (E) greater than 10
ANs : A
我的思路是这样 ： -1/10 < n < 1/10 & n < 0 请问哪边有错误阿
=================================
116. 12050-!-item-!-187;#058&008561 A certain manufacturer of cake, muffin, and bread mixes has 100 buyers, of whom 50 purchase cake mix, 40 purchase muffin mix, and 20 purchase both cake mix and muffin mix. If a buyer is to be selected at random from the 100 buyers, what is the probability that the buyer selected will be one who purchases neither cake mix nor muffin mix?
(A) 1/10 (B) 3/10 (C) 1/2 (D) 7/10 (E) 9/10
ANS : B
====================================
5. 1353-!-item-!-187;#058&000886 Working alone at its own constant rate, a machine seals k cartons in 8 hours, and working alone at its own constant rate, a second machine seals k cartons in 4 hours. If the two machines, each working at its own constant rate and for the same period of time, together sealed a certain number of cartons, what percent of the cartons were sealed by the machine working at the faster rate?
(A) 25% (B) 33 1/3 % (C) 50% (D) 66 2/3 % (E) 75%
ANS : D
what percent of the cartons were sealed by the machine working at the faster rate? 请问这句话的意思是什么 ？ 感觉都是题目解读有错...
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2008-8-16 22:08:00
