Maths boffins, help...
 

  You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more

[Closed] Maths boffins, help!

6 Posts
5 Users
0 Reactions
70 Views
Posts: 2116
Free Member
Topic starter
 

Despite being able to calculate the answer to a problem on a spreadsheet, I cant get my head round how to express it as a simple formula, so all help greatly appreciated 🙂

Say I want an income that increases at 5% compound a year for x years e.g. £10k in year 1, £10500 in year 2, £11,025 in year 3 etc

How do I express the total income payable over x years?


 
Posted : 01/04/2020 8:42 pm
Posts: 0
Free Member
 

10000 * (1.05)^X


 
Posted : 01/04/2020 8:46 pm
Posts: 2801
Free Member
 

10000 * (1-(1.05)^x)/-0.05


 
Posted : 01/04/2020 8:59 pm
Posts: 2116
Free Member
Topic starter
 

Brilliant Ho hum, cheers!!


 
Posted : 01/04/2020 9:14 pm
Posts: 10315
Full Member
 

Edit:Ah, HoHums is doing the totalling as well


 
Posted : 01/04/2020 9:50 pm
Posts: 6734
Full Member
 

X+5%/yr=luckybugger


 
Posted : 01/04/2020 9:54 pm
Posts: 2801
Free Member
 

Ha ha!

My first job when I left university was as a trainee actuary with Norwich Union (I never qualified, but I passed 4 out of 9 of the exams)

It was a good while ago, but a quick search on google led me to the answer!

Which was equation 2.45 on page 21 of this document:

https://www.worldscientific.com/doi/pdf/10.1142/9789813224681_0002

Oh my god, I am a geek!


 
Posted : 01/04/2020 10:17 pm

6 DAYS LEFT
We are currently at 95% of our target!