How Get In measures

[Anonymous]

Cost = CALCULATE(SUM(A[Cost]),FILTER(A,A[Group]=B[Group]))

This my calculated column DAX its giving expected result, I have tried many ways to create this in Measure But I am not able to achive the result by measure.

 Table A

Group	Cost
A	5
A	5
B	4

Table B 

Group	Cost
A	10
B	4

I want result as Table B, How I achive the above mentioned results using measure

[Anonymous]

Execellent John, Its working as expected 

[johnt75 · Accepted solution]

I think this will work

Cost = CALCULATE( SUM('A'[Cost]), TREATAS( VALUES('B'[Group]), 'A'[Group]) )