count 2 nonblank cells on multiple worksheets

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

I need to count 2 nonblank cells ( cells containing x's) on multiple
worksheets as a conditional formula to count only the cells that have both
conditions. For example,
I would need to know how many people that were over 70 have a history of
cancer based upon a data sheet like below for 255 sheets of data.
70 History of cancer
Click to expand...
x x

Thank you ,
April
 
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