- (1) In a family, there are 5 members: A, B, C, D, and E. A is the mother of B, C is the father of D, and B is the sister of D. How many males and females are in the family?
- (2) If there are three men and two women in a group, and the women are younger than the men, how many people in the group are older than the women?
- (3) In a family, P is the father of Q, and Q is the son of R. What is the gender of P, Q, and R?
- (4) If there are four children in a family, two sons and two daughters, how many children are male and how many are female?
- (5) In a group of 12 people, 7 are adults and 5 are children. How many adults are male, and how many are female, if half of the children are male?
- (6) If a family consists of a father, mother, son, and daughter, how many males and females are there?
- (7) In a group of 6 people, 3 are male, and 3 are female. The age range is from 5 to 50. How many people in the group are under 18 years old?
- (8) A family has 3 children. Two of them are sons, and one is a daughter. The parents are both over 40 years old. How many males and females are there in the family?
- (9) In a class of 30 students, there are 12 boys and 18 girls. How many students are older than 10 years if the average age of boys is 11 and the average age of girls is 12?
- (10) A group of 5 people consists of 3 females and 2 males. The age range is from 5 years to 60 years. How many females are above 30 years old?
- (11) In a party, 8 women and 10 men attend. If 3 women and 5 men are older than 30, how many women and men are younger than 30?
- (12) A mother has three children. One is a girl, and the other two are boys. What is the gender ratio of the children?
- (13) In a family of 6 members, there are 3 males and 3 females. The youngest child is 3 years old, and the oldest is 60. How many people are above 20 years old?
- (14) There are 4 children in a family. The eldest is a boy, the second is a girl, the third is a boy, and the youngest is a girl. How many boys and girls are there?
- (15) A family consists of a father, mother, and two children. The father is 40 years old, the mother is 35, the son is 10, and the daughter is 5. How many males and females are in the family?
- (16) In a classroom of 20 students, there are 8 boys and 12 girls. How many boys and girls are under 10 years old if the average age of boys is 9 and the average age of girls is 11?
- (17) A group of 6 people includes 4 men and 2 women. The men are aged 25, 30, 35, and 40 years old. The women are aged 20 and 22. How many women are older than 20 years old?
- (18) In a team of 10 people, 6 are male and 4 are female. The males are aged 20, 25, 30, 35, 40, and 45. The females are aged 18, 22, 28, and 34. How many people in the group are older than 30 years?
- (19) A family has 5 children: 2 boys and 3 girls. The boys are 8 and 10 years old, and the girls are 5, 7, and 12 years old. How many males and females are in the family?
- (20) In a company, there are 8 male employees and 7 female employees. If the male employees have an average age of 35 and the female employees have an average age of 32, what is the total number of employees aged above 30?
- (21) A father and his two sons are traveling together. If the father is 40 years old, and the sons are 12 and 15 years old, what is the gender breakdown of the family?
- (22) In a sports team, there are 5 male players and 4 female players. The ages of the males range from 18 to 30, while the females are aged between 20 and 25. How many players are older than 20 years?
- (23) In a gathering of 15 people, there are 9 men and 6 women. If the average age of the men is 30 and the average age of the women is 25, how many women are under 25 years old?
- (24) A family has 7 members. There are 4 males and 3 females. The ages of the males are 35, 40, 45, and 50. The ages of the females are 25, 30, and 55. How many females are older than 30?
- (25) In a village, there are 20 children: 12 boys and 8 girls. If the boys are aged between 6 and 10, and the girls are aged between 5 and 9, how many boys and girls are aged above 8 years?
Answer
(1) There are 2 males (C, D) and 3 females (A, B, E).
(2) There are 3 people older than the women (the 3 men).
(3) P is male, Q is male, and R is female.
(4) There are 2 males (sons) and 2 females (daughters).
(5) There are 3 male adults and 3 female adults (half of the children are male).
(6) There are 1 male (father) and 3 females (mother, son, daughter).
(7) There are 2 people under 18 (the children).
(8) There are 2 males (the father and son) and 2 females (the mother and daughter).
(9) There are 22 students older than 10 years (because the average age of boys is 11, and girls’ average age is 12).
(10) There are 2 females older than 30.
(11) There are 5 women under 30 and 5 men under 30.
(12) The gender ratio is 2 males and 1 female (the children).
(13) There are 4 members above 20 years old.
(14) There are 2 males and 2 females.
(15) There are 2 males (father, son) and 2 females (mother, daughter).
(16) There are 6 boys and 4 girls older than 10 years old.
(17) There are 2 women above 20.
(18) There are 5 males and 3 females older than 30.
(19) There are 2 males and 3 females in the family.
(20) There are 15 employees above 30.
(21) The gender breakdown is 1 male (father), 2 males (sons).
(22) There are 3 males older than 20.
(23) There are 4 females under 25.
(24) There are 2 females above 30.
(25) There are 8 boys and 3 girls aged above 8 years.