Create formula to sum column total if specific text is present in second column

Sample Workbook.xlsx

I'm trying to sum the totals of a column (column I and column J) if a second column (column G and column H) has the text "Y" in it but to not add in if the row cell is blank of the relevant columns. Can anyone advise on the formula. The figures of the column required to be totalled are equal to value of previous cells so are calculated by a cell formula in that column cell.
I hope I'm explaining myself well here.
The sample workbook attached is a short representation of what I'm trying to do, thank you for all help suggested, cheers.

Hi
If I understand you correctly put this formula in G15:

=SUMIF(G3:G14,"Y",F3:F14)

and this formula in H16:

=SUMIF(H3:H14,"Y",F3:F14)

Good luck.
Tony

Cheers Tony, that does nicely. I'm still a beginner with Excel but have always wanted to master the formulas a bit better. This short string is perfect and opens up a few other possibilities for me going forward. Thanks a lot

Happy to help. Thanks for the feedback.