已列answer,但我要詳細步驟!!!
Mr. Chow borrows $84000 from a friend on simple interest.If he repays the amount by 15 monthly instalments of $6062,
(a) find the interest paid. $6930
(b) find the interest rate p.a. 6.6%
F.3 Mathematics問題
2008-02-18 7:26 am
回答 (2)
2008-02-18 7:42 am
✔ 最佳答案
(a) total payment = $6062 x 15 = $90930interest = $ 90930 - $84000 = $6930
(b) interest rate = ($6930 / $84000) x (12 / 15) x 100%
= 6.6%
2008-02-18 7:52 am
(a)6062 x 15 – 84000
= $6930
The interest paid $6930.
(b)84000 x 15/12 x y% = 6930
105 000 x y% = 6930
y% = 6930 / 105 000
y% = 0.066
y = 6.6
The interest rate p.a. is 6.6%.
= $6930
The interest paid $6930.
(b)84000 x 15/12 x y% = 6930
105 000 x y% = 6930
y% = 6930 / 105 000
y% = 0.066
y = 6.6
The interest rate p.a. is 6.6%.
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