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?
15
75
45
Can't be determined
A
15
B
75
C
Can't be determined
D
45
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Solution
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let total houses =100 House containing one person=100−40=60 House containing only a male=25% of 60 25100×60=15 ∴ House containing only one female=60−15=45%
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