One for the mathematicians

  Alan-Petrie 12:51 04 Jan 2010
Locked

I had a look on google but couldnt really find anything of much help so I thought I would give the forum a try.

Compound interest can be worked out with the formula A=P(1+R)^N
A being the amount including interest,
P being the initial amount,
R being the rate of depreciation or appreciation,
and finally N being the number of year for which this happens.

however how does the formula change if you added an extra sum of money in every year?

Any help would be greatly appreciated. Thanks Alan

  peter99co 18:14 04 Jan 2010
  peter99co 18:20 04 Jan 2010

Use the Regular deposit calculator

  sunnystaines 18:38 04 Jan 2010

agree so much easier with a calculator

  Alan-Petrie 18:39 04 Jan 2010

thanks for the help. The Regular deposit calculator was perfect.

  the hick 19:53 04 Jan 2010

What you need is a set of accountants' Discount Tables, really easy to use, they also used to include simple interest tables and details for 'sinking funds'. Bit like Log Tables, not made any more!

  morddwyd 20:19 04 Jan 2010

"Bit like Log Tables, not made any more!"

What, no more log tables?

The world really is going to hell in a hand basket!

  bri-an 21:15 04 Jan 2010

Next they'll be telling us that moveable log tables (aka slide rule) are defunct as well.
How do the scientists cope??

  the hick 17:52 05 Jan 2010

bri-an, slide-rules! A few still available.
click here

  Forum Editor 18:16 05 Jan 2010

Well not one for me,then.

This thread is now locked and can not be replied to.

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