Calculate Gross amount knowing the Net and Tax witholdings

[skiracer_blah]

Hi, I'm having a brainfart and need some help probably more with algebra than with Excel. Ok here it goes:

Gross Amount $2000
Fed Tax witholding 12% (Gross*.12=$240)
State Tax Witholding 5% (Gross*.05=$100)

Net Amount = $1660 (Gross-$240-$100)


Now, assuming i have a net amount of $1660 and i know Federal Witholding at 12% and State at 5%, how do i go backwards and calculate the gross?

 

[pplstuff]

Gross = Net / (1 - (State% + Fed%))

 

[skiracer_blah]

Perfect, Thank you!