[問題] 跪求兩題計量解惑(皆與百分比有關)謝謝!

看板GRE (GRE入學考試)作者 (徽徽)時間13年前 (2012/08/17 06:58), 編輯推噓1(106)
留言7則, 4人參與, 最新討論串1/1
哈囉 大家 碰到兩題計量算了好幾遍答案仍相差十萬八千里 還望大家不吝指教 謝謝:) 1. 1970:24.6% 1971:27.5% What was the approximate percent increase in nationawide subscriptions to newsmagazines between 1970 and 1971? answer:51% 2.At Megalomania Industries, factory workers were paid $20 per hour in1990 and 10$ per hour in 2000. The CEO of Megalomania Industries was paid $5 million per year in1990 and $50 million per year in 2000. The percent increase in the pay of Megalomania’s CEO from 1990 to 2000 was what percent greater than the percent decrease in the hourly pay of Megalomania’s factory workers over the same period? 答案是950% -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.45.169.237

08/17 09:58, , 1F
題目感覺不完全欸?
08/17 09:58, 1F

08/17 10:25, , 2F
NO.2 CEO增加50-5/5=900%,Workers減少10-20/10=-50%
08/17 10:25, 2F

08/17 10:26, , 3F
所以CEO比Workers高900%-(-50%)=950%
08/17 10:26, 3F

08/17 10:27, , 4F
唉呀,Workers是10-20/20=-50%才對@@"
08/17 10:27, 4F

08/17 10:42, , 5F
請問減少的百分比可以用"負"表示?
08/17 10:42, 5F

08/17 12:10, , 6F
可以啊
08/17 12:10, 6F

08/19 13:00, , 7F
謝謝大家,原來可以用負表示XD恍然大悟!
08/19 13:00, 7F
文章代碼(AID): #1GBNiU9Q (GRE)
文章代碼(AID): #1GBNiU9Q (GRE)