DAX code to sum by group

[bnadir55]

Hi, 

I have 2 tables A and B with 1 key valid relation between them 

what I need is to sum by Workweek the price for each color, appreciate your advice with what need to solve this, 

Thank you 

[HotChilli]

Could you clarify what is in Table A and what is in Table B (and the relationship between them)?  It's not clear from your picture.

If you want to post the data (instead of a picture) that is always helpful.