There are 80 families in a small extension area. 20 percent of these families own a car each. 50 percent of the remaining families own a motor cycle each. How many families in that extension do not own any vehicle ?
A) 30
B) 32
C) 23
D) 36
Ans: B) 32
*Solved*
Families own car =20/100x80 =16
Families who own motor cycle =50/100x(80-16) =1/2x64 =32
Families who do not own any vehicle = 80 - (16+32) = 80 - 48 =32
