Compound Multiplication Problem

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UDcc123

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Joined
Feb 24, 2004
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My brain's gone blank for some reason. Say I have $100 in cell A1. And then I have -10% in cells A2, A3, A4, and A5. I want to know what happens if I take 10% off the $100 ($90)...and 10% off of that ($81), and so forth so I end up with $65.61 after taking four 10%s off.

I can keep a running total in column B, but I was hoping to do it in one cell with one formula. I can't say: A1 * (1+SUM(A2:A5)) because that returns $60 instead of $65.61. I'm drawing a blank on how to do this in excel.

Thanks

$100
-10% $90
-10% $81
-10% $73
-10% $65.61
 

Excel Facts

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Select a range of cells. The total appears in bottom right of Excel screen. Right-click total to add Max, Min, Count, Average.
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