In a village, 40% of the families have bikes, 20% have cars and 10% have both bikes and cars. There are 85 families in the village. How many families have neither bikes nor cars?
ATQ, the family who have Only bikes = 40% the family who have Only cars = 10% the family who have Both bikes and cars = 10% Thus, the % of families having neither two-wheeler nor four-wheeler is = 100 -(40 + 10 + 10) = 40% So, 85 x (40/100) = 34
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