In a recent survey 40% houses contained two or more people. Of those houses containing only one person 25% were having only a male. What is the percentage of all houses which contain exactly one female and no males? Pick one
A) 75	B) 40	C) 15	D) Cannot be determined	E) None of these
Houses containing only one person = 100 – 40 = 60%   Houses containing only a male = 60 × 25⁄100 = 15%   ∴ Houses containing only one female = 60 – 15 = 45%   Answer None of these
<result>E</result>
In a recent survey 40% houses contained two or more people. Of those houses containing only one person 25% were having only a male. What is the percentage of all houses which contain exactly one female and no males?