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[問題] F.3 Maths Question

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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 ]
   

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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.
【DSE Maths】中大教育文憑 × 數學系畢業◆助你奪*升Lv~
首次以課題分班,10月開班招生,快d黎睇下~

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回覆 1# 00030 的帖子

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