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## #1 2006-05-06 14:49:43

ganesh
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### Finance

Simple Interest

Simple Interest on P Dollars at interest rate r (expressed as a decimal) over time period t is

Example:- The Simple Interest on \$400 for 3 months at 5% per annum Simpe interest would be
I=Prt

Hence Simple Interest on \$400 for 3 months at 5% pa Simple Interest is 5 Dollars.

Compound Interest

The amount A, or future value, of principal P invested at interest rate r (expressed as decimal) compunded m times per year for t years is

where
,

the interest rate per compounding period, and n=mt, the number of compunding periods.

For example, Compound interest for \$400 at the rate of 10% per annum compounded half yearly for 1 year would be calculated as follows:-
n=2 (1year = 2 half years).
i=10% pa = 5% per half year

Therefore, Compound Interest = \$441-\$400 = \$41

Annuity
The future value of an Ordinary Annuity is

where R is the periodic payment, i the interest rate per period, and n the number of periods. In an ordinary annuity, the payment is made at the end of each period.

The present value of an ordinary annuity is

Profit and Loss
SP=Selling Price, CP=Cost Price

Character is who you are when no one is looking.

## #2 2006-05-06 23:21:31

George,Y
Super Member

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### Re: Finance

What job can we do if you put all the tricks online ????

X'(y-Xβ)=0

## #3 2006-05-08 15:10:49

ganesh
Moderator

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### Re: Finance

Discount
If a discount x% is offered on price P, then

For example, if a discount of 15% is offered on a car worth \$4000, then the discounted price is given by

Successive Discounts

If discounts of x% and y%, in that order succesively, are offered on price P, then

For example, if successive discounts of 10% and 20% are offered on an article worth \$5000, then

Character is who you are when no one is looking.

## #4 2010-06-10 14:48:43

john-penny
Novice

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### Re: Finance

thats great solution