數學求救..(financial)

Question

calculate the principal that must be invested now, to provide:

a) $2500 in 5 years when the rate is 6又3/4% compounded annually.

b) $525 in 4 years when the rate is 5又1/2% compounded quarterly.

我需要作法 .. 和答案 ..

最好是解釋給我聽也可以 ~

因為是ISU .. 所以我很無助 = . = ..

已更新項目:

quarterly 不需要額外作些什麼跟 4有關的嗎 @@?

Answer 1

最佳解答

a) $2500 in 5 years when the rate is 6又3/4% compounded annually.

2500*(1+6.75%)^5=3465.61

b) $525 in 4 years when the rate is 5又1/2% compounded quarterly

525*(1+5.5%)^4=650.38

2009-01-04 00:36:39 補充：

抱歉, 沒看到 quarterly

2009-01-04 00:37:49 補充：

b) $525 in 4 years when the rate is 5又1/2% compounded quarterly

525*(1+5.5%/4)^(4*4)=653.21

Answer 2

是呀5又1/2% compounded quarterly

則525 × (1+5.5%/4)^16

Answer 3

計算本利和 = 本金 × (1+利率)^n

n 為期數

2009-01-02 19:16:32 補充：

2. 525 × (1+5.5%)^16 ≒ 1236.5

quarterly 按季