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1、1、Two numbers differ by（与相差 ）57. Their sum is 185. Find the numbers. 2、A bus went 318 km farther than a car. The car went one third （三分之 一）as far as the bus. How far did each vehicle（车辆） travel? 3、one number is four times another number. The larger number is also 87 more than the smaller number. Fin
2、d the numbers. 4、A clown（小丑） weights 60 lb（磅） more than a trapeze artist.（荡秋千 演员）。 The trapeze artist weighs two thirds（三分之二）as much as the clown. How much does each weigh? 5、The U.S. Senate has 100 memebers, all Democrats or Republicans. Recently there were 12 more Democrats than Republicans. How m
3、any Senators from each political party were there at that time? 6.The ninth grade class has 17 more girls than boys. there are 431 students in all. how many boys are there? how many girls are there? 7. Elena has one and a half times as much money as Ramon.Together they have 225. how much money does
4、each have? 8、Western state college is 18 years older than southern state. western is also 2 and the half times as old as southern. how old is each? 9、The alarm of Clock A rings every 4 minutes, the alarm of Clock B rings every 6 minutes, and the alarm of Clock C rings every 7 minutes. If the alarms
5、of all three clocks ring at 12:00 noon, the next time at which all the alarms will ring at exactly the same time is （ ） A. 12:28 P.M. B. 12:56 P.M. C. 1:24 P.M. D. 1:36 P.M. 10、On 5 math tests, Gloria had an average score of 86. If all test scores are integers, what is the lowest average score avera
6、ge score Gloria can receive on the remaining 3 tests if she wants to finish the semester with an average score of 90 or higher? A.、90 B、 92 C、94 D、96 E、97 11、Two boys, Dudi and Gani, run back and forth between two points A and B at a constant（恒定的） speed without stopping. Dudis speed is 1.5 times Ganis speed. Dudi runs from A to B while Gani from B to A. They both start at the same time. The two boys meet for the first time at 800 meters away from B. How far are the boys from A when they meet for the second time?
