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A parking garage rents parking spaces for $10 per week or $30 per month. How much does a person save in a year by renting by the month rather than by the week? (A) $140 (B)$160 (c)$220 (D)$240 (E)260 我觉得答案有问题：10*4*12-30*12 =120，可是没这答案、
2 A certain culture of bacteria quadruples every hour. If a container with these bacteria was half full at 10:00 a.m, at what time was it one-eight full? A 9:00am B 7;00Am C 6:00am D 4:00am E 2:00am
If 2/3 as many dozen were sold in April as in May 是2/3 April =May 还是 May=2/3？
In traveling from a dormitory to a certain city, a student went 1/5 of the way by foot, 2/3 of the way b bus, and the remaining 8 kilometers by car. What is the distance, in kilometers, from the dormitory to the city? A 30 B 45 C60 D90 E120
好象没有答案
Odd number 可以是负数吗？
A family made a down payment of $ 400. The balance with interest was paid in 23 monthly payments of $26 each and a final payment of 9 percent o. the amount of interest paid was what percent of the amount borrowed? A 6% B 12% C 14% D 16% E 20%
In each production lot for a certain toy, 25 percent of the toy are red and 75 oercent of the toys are blue. Half the toys are size A and half are size B . If 10 out of a lot of 100 toys are red and size A, how many of the toys are blue and size B? A 15 B 25 C 30 D 35 E 40
On a purchase of $120, a store offered a payment plan consisting of a $20 down payment and 12 monthly payments of $10 each. What percent of the purchase price, to the nearest tenth of a percent, did the customer pay in interest by using this plan ?
A 16.7% B30% C 75.8% D 106.7% E 107.5%
In Company X, 30 percent of the employees live over ten miles from work and 60 percent of the employees who live over ten miles from work are in car pools. If 40 percent of the employees of company X are in car pools, what percent of the employees of Company X live ten miles or less fopm work and are in car pools? A 12% B 20% C 22% D 28% E 32%
A corporation with 5000000 shares of publicly listed stock reported total earnings of $7.2 per share for the first 9 months of operation. During the final quarter the number of publicly listed shares was increased to 10000000 share, and fourth quarter earnings were reported as $1025 per share. What are the average annual earnings per share based on the number of shares at the end of the year? A $6 million
B $24 million $ 60 million D $240 million E $ 600 million
A total of 40 brand X television sets and 80 brand Y television sets were purchased for a motel chain. If the price of each brand Y set was twice the price of each brand X set, wgat percent of the total bill was the price of a brand Y set?
A 0.25% B 0.5% C 0.625% D 0.833% E 1.0%
This year Henry will save a certain amout of his income., and he will spend the rest. Next year Henry will have no income, but for each dollar that he saves this year, he will have 1+r dollars avai;able to spend. In terms of r, what fraction of his income should Henry save this year so that next year the amount he was available to spend will be rqual to half the amout that he spends this year?
A 1/(r+2) B 1/(2r+2) C 1/(3r+2) D 1/ (r+3) E 1/(2r+3)
If an automobile averaged 22.5 miles per gallon of gasoline, approximately hoe many kilometers per liter of gasoline did the automobile average ? (1 mile = 1.6 kilometers and 1 gallon =3.8 liters, both rounded to the nearest tenth.) A 3.7 B 9.5 C 31.4 D 53.4 E 136.8
A certain company assigns employees to offices in such a way that some of the offices can be assigned to an office . In how many ways canthe company assign 3 employees to 2 different offices? | 
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发表于 2008-9-24 12:48:00
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