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From lok yin
enUS
Mon, 29 Oct 2007 21:58:50 +0000
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Yahoo Answers: Answers and Comments for Ｆ．３ Ｍａｔｈｓ ａｂｏｕｔ ｐｅｒｃｅｎｔａｇｅ ｃｈａｎｇｅ！ [數學]
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https://answers.yahoo.com/question/index?qid=20071029000051KK04239
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From 雞尾包: Mr Ho bought a flat at the beginning of 2004 a...
https://answers.yahoo.com/question/index?qid=20071029000051KK04239
https://answers.yahoo.com/question/index?qid=20071029000051KK04239
Mon, 29 Oct 2007 22:09:07 +0000
Mr Ho bought a flat at the beginning of 2004 and sold it at $2300000 at the end of December 2004. Suppose the price of Mr Ho's flat dropped by 23% from Jan. to Oct. but increased at 6% every month from Nov. in 2004.
a. How much did Mr Ho pay for the flat, correct to the nearest ten thousand dollars?
x(1  23%)(1 + 6%)^2 = 2300000
x = 2658430.925... = 2660000
b. Find the percentage change in the price of the flat within 2004, correct to 3 sig. fig
(2300000  2660000) / 2660000 * 100%
= 13.5%