13. On a certain scale of intensity, each increment of 10 in magnitude represents a tenfold increase in intensity. On this scale, an intensity corresponding to a magnitude of 165 is how many times an intensity corresponding to a magnitude of 125?
(A) 40
(B) 100
(C) 400
(D) 1,000
(E) 10,000
答案:E, 题目是什么意思?
2. The employees of Smith Enterprises received wage increases ranging from 30 cents to cents per hour. What was the maximum wage increase for a 40-hour week?
(A) $12.00
(B) $23.00
(C) $34.80
(D) $35.00
(E) $35.20
答案
(87.5-30)*40=23,我选B,答案是不是错了.
10. A square playground has the same area as a rectangular playground that is 30 meters longer but 20 meters narrower. What is the length, in meters, of a side of the square playground?
(A)
(B)
(C) 25
(D) 50
(E) 60
答案:E
题目什么意思?
15. The rear wheels of a car crossed a certain line 0.5 second after the front wheels crossed the same line. If the centers of the front and rear wheels are 20 feet apart and the car traveled in a straight line at a constant speed, which of the following gives the speed of the car in miles per hour? (5,280 feet = 1 mile)
10. A square playground has the same area as a rectangular playground that is 30 meters longer but 20 meters narrower. What is the length, in meters, of a side of the square playground?
(A)
(B)
(C) 25
(D) 50
(E) 60
答案:E
题目什么意思?
------------------------15. The rear wheels of a car crossed a certain line 0.5 second after the front wheels crossed the same line. If the centers of the front and rear wheels are 20 feet apart and the car traveled in a straight line at a constant speed, which of the following gives the speed of the car in miles per hour? (5,280 feet = 1 mile)
