新手og上数学ps题求助

mlvince · 发表于 2010-11-29 22:24:47

On a recent trip, Cindy drove her car 290 miles, rounded to the nearest 10 miles, and used 12 gallons of gasoline, rounded to the nearest gallon. The actual number of miles per gallon that Cindy's car got on this trip must have been between a290/12.5and290/11.5 b 295/12and 285/11.5 c 285/12and295/12 d 285/12.5and295/11.5 e 295/12.5and285/11.5

At a loading dock, each worker on the night crew loaded 3/4 as many boxes as each worker on the day crew. If the night crew has 4/5 as many worker as the day crew, what fraction of all the boxes loaded by the two crew did the day crew load?

a 1/2 b 2/5 c3/5 d4/5 e5/8
麻烦先给我讲解下题目得意思～谢谢了！！！！

mlvince · 发表于 2010-11-29 22:49:02

顶｀

mlvince · 发表于 2010-11-29 23:22:12

keninhk · 发表于 2010-11-29 23:30:17

On a recent trip, Cindy drove her car 290 miles, rounded to the nearest 10 miles, and used 12 gallons of gasoline, rounded to the nearest gallon. The actual number of miles per gallon that Cindy's car got on this trip must have been between a290/12.5and290/11.5 b 295/12and 285/11.5 c 285/12and295/12 d 285/12.5and295/11.5 e 295/12.5and285/11.5

cindy開車走了290miles, 取到最近的10 miles, 就是說例如真實走了286miles or 282, 取到最近的10miles, 就是290 和 280，同樣，用了12gallons 的油，取到最近的1gallon
問每gallon油能跑多少mile的區間是？

At a loading dock, each worker on the night crew loaded 3/4 as many boxes as each worker on the day crew. If the night crew has 4/5 as many worker as the day crew, what fraction of all the boxes loaded by the two crew did the day crew load?
a 1/2 b 2/5 c3/5 d4/5 e5/8

每個worker晚上的工作量是白天的3/4, 然後數量上，晚上的worker是白天的4/5, 問白天的工作量佔白天+晚上的fraction.

mlvince · 发表于 2010-11-30 15:56:39

谢谢～

新手og上数学ps题求助

所属分类: GMAT考试

正在浏览此版块的会员 ()

浏览过的版块