At this time the mother is 27.75 and the son is 6.75. In six years the mother will be 33.75. This will make her 6 times as old as her son's age at this time.

Son's age (now)= 6.75
Moms age (in 6yrs)= 33.75

6.75 X 5= 33.75

Therefore the husband is at Souq Waqif smoking sheesha!