In a group of persons, 70% of the persons are male and 30% of the persons are married. If two sevenths of males are married, what fraction of the females is single?
In a group, 70% are Males. So females = 30%
Now, two-seventh of males are married.
Married males = 2/7 * 70% = 20%
Total married persons = 30%
Married females = Total married - Married males = 30% - 20% = 10%
Total females = 30%
Out of every 3 females, one is married and two are unmarried.
The correct option is C.