I have the following spreadsheet:


For column B, the formula is simple: B1 + (B1 * A2)

The question is: how to get the numbers in column C?

I manually typed all values on column C but the idea is if I type 24200 on C1, it calculates all the other values.

24200 - 10% = 21780

21780 is 220 less than the initial price of 22000.

Thank you.

  • Hi. Your Title mentions "cost price" but this isn't isn't mentioned in the body of the question. What's the relationship between Column B and Column C?
    – Tedinoz
    Aug 4, 2022 at 5:01

2 Answers 2


After deleting B2:B11 and C2:C11, put this formula in B2:


and this other in C2:


columns B and C will fill themselves


Try this formula:

Cell C1:=B11

Cell C2:=$C$1-($C$1/(1+.1)*A2)

  • it works, but only up to 10%. if I want to extend to 20%, not anymore. Aug 5, 2022 at 1:06
  • You specifically cited 1-10%. If you want to extend to 20% then you must reflect this in the formula. The equivalent formulas would be C1:=B21 (or "26400") and C2:=$C$1-($C$1/1.2*A2)
    – Tedinoz
    Aug 5, 2022 at 9:50

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