Excel Formula...Increase total by percentage based on Yes-No validation

Hi. I am trying to increase the total in a cell that already has a formula. The formula is pretty basic:  =SUM(F13:F17)  This shows the total from a column.

Now I need to increase that total by 15% if another cell somewhere in the same worksheet indicates a "Yes." I already have the Yes or No drop down created.

I need a formula that works to do that. I think it is pretty basic, but I can;t seem to fit my mind around it this morning. Any help would be appreciated.
cwaite3Asked:
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Missus Miss_SellaneusCommented:
using d2 as an example:

=SUM(F13:F17) * IF(d2="Yes",1.15,1)

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cwaite3Author Commented:
Thanks so much for your help.
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