(20點)一條簡單的單利息**很緊急

2007-08-13 10:56 pm
小明以年利率8%把一筆款項存入銀行,以單利息計算,第一季得利息$2000。
(a)若把年利率調低2%,求小明於第二季可得的利息
更新1:

ericin ..你有 將年利率下調2% 咩??

更新2:

ericin ..你有計個T咩? I= PxRxT

回答 (6)

2007-08-13 11:01 pm
✔ 最佳答案
let x = 本金

x (0.08) = $2000
x= 25000

25000 (1-8%)= $1500

--------------------------------------------------------- OR
0.08-0.02 / 0.08 * (2000) =$1500

結果一樣...
2007-12-22 12:49 am
This is totally rubbish!!

The correct way of doing this problem is that by roger_cheung 1.
2007-08-16 10:14 pm
(a) 年利率8%=$2000
款項=$2000/8%=$25000
若把年利率調低2%,
新年利率
=8%(1-2%)
=8%(98%)
=7.84%
So,第二季可得的利息
=款項*新年利率
=$25000*7.84%
=$1960
2007-08-14 1:51 am
Let Y be the money he saved :

Y × 8% × ( 1/4 ) = $2000
Y × 0.08 × 0.25 = $2000
Y = $100000

∴ He saved $10000. .


a) we know that he has saved $10000.

∴ $100000 × ( 8% - 2% ) × ( 1/4 )

= $100000 × 6% × 0.25

= $100000 × 0.06 × 0.25

= $1500

∴Ans : $1500


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2007-08-13 11:33 pm
(注: 每季的利息 = 本金 x 年利率 x 年期; 一季的年期是 1/4 年)

設原來本金為 $P
P x (8%) x (1/4) = 2000
P = $100,000

第一季後,本利總和是 $102,000 ($100,000 + $2,000)
第二季年利率是 6% (8% - 2%),
第二季可得的利息
= $102,000 x 6% x 1/4
= $1,530

2007-08-13 15:48:33 補充:
如只以單利息計算,計算第二季利息時可不考慮第一季的利息,而只以原來本金 $100,000 計算所以第二季可得的利息= $100,000 x 6% x 1/4= $1,500
2007-08-13 11:01 pm
2000/8%*2%=500
第二季可得的利息=500

2007-08-13 15:03:03 補充:
2000/8%*2%=25000*2%=500


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