梯形RSTU, ST 平行 RU ， ST＝45m， SW垂直于RU于W点，SW＝60m，RW＝15m
Quadrilateral RSTU shown above is a site plan for a parking lot in which side RU is parallel to side ST and RU is longer than ST. what is the area of the parking lot?
1 RU= 80 meters
2 TU=20*根号2 meters
answer: D
Did Sally pay less than x dollars, including sales tax, for her bicycle?
1. the price Sally paid for the bicycle was (0.9)x dollars, excluding the 10 percent sales tax.
2. the price Sally paid for the bicycle was $170 excluding sales tax.
Answer: A
Chan and Micko drove separate cars along the entire length of a certain route. If Chan made the trip in 15 min, how many minutes did it take Micko to make the same trip?
1. Micko’s average speed for the trip was 3/4 of Chan’s average speed
2. the route is 14 miles long
answer:A
[此贴子已经被作者于2002-12-2 23:39:48编辑过] | 
