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標題: [問題] F.3 Maths Question [打印本頁]

作者: 00030    時間: 2014-11-21 04:45 PM     標題: F.3 Maths Question

Anybody knows how to do it??

Peter borrowed $150,000 from a loan shark to buy a car. The interest rate is 45% p.a. compounded monthly. He repaid $8,000 each month. The depreciation of the car is 10% per month.
a) Find the value of the car after 3 months.
b) Find the amount owed by Peter after 3 months, correct to nearest hundreds.
c) What percentage has Peter lost in the sale and purchase of the car?

[ 本帖最後由 00030 於 2014-11-21 05:38 PM 編輯 ]
作者: Simon    時間: 2014-11-22 02:55 PM

Compound Interest:

P(1 + r%/n)^(nT)

where r% is the interest rate p.a., n be the no. of dividend in one year, and T be the period in year.

Depreciation:

New Value = P (1 - x%)

where P is the old value, and x% is the depreciation rate.
作者: Smile4    時間: 2015-1-8 09:35 PM     標題: 回覆 1# 00030 的帖子

niceeeeeeeeee
作者: jacklee    時間: 2015-3-10 05:25 PM

thxxxxx
作者: jacklee    時間: 2015-3-10 05:26 PM

:@
作者: Makacke    時間: 2015-3-25 12:08 PM






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