Compound rate

SPY

New Member
Joined
Nov 9, 2006
Messages
29
I'm trying to create a worksheet to help with an online game (Storm8 Worldwar). Cost of units increase by 10% after each purchase. e.g first unit costs 20000, next time it's 22000 and then 24200 etc.
I'd like to enter the base cost (20000) in a cell and next to it the quantity held and in another cell calculate the cost of the next purchase.

Hope that makes sense! Thanks
 

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Square and cube roots
The =SQRT(25) is a square root. For a cube root, use =125^(1/3). For a fourth root, use =625^(1/4).

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Legend
Joined
Jun 19, 2002
Messages
63,650
Try this - formula in B3 copied down

Excel Workbook
AB
1QtyCost
2120000
3222000
4324200
Sheet9
 

SPY

New Member
Joined
Nov 9, 2006
Messages
29
Thanks but I'm trying to use a single cell to calculate the cost.

Base Cost Quantity Held Next Cost
Unit A 20 5 29.3


i.e
# 2 = 20 *1.1 22
# 3 = 22 *1.1 24.2
#4 = 24.2 *1.1 26.62 etc
 

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