Maximum possible number of families in that town = 310 families
Given that :
60 families own Tv sets
85 families own scooters
70 families own refrigerators
95 own radio
and 130 families own exactly one of these Items
The maximum number of families in town will
∑ all the families that own at least one of the utilities
= 60 + 85 + 70 + 95 = 310 families
Note : The 130 families that own exactly one of the items fall within the 310 families as well
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