model 7 average on ages/weight Practice Questions Answers Test with Solutions & More Shortcuts

Question : 41

3 years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is same today. The present age of the baby is

a) 1 $1/2$ year

b) 1 year

c) 3 years

d) 2 years

Question : 42 [SSC CHSL 2011]

Five years ago, the average age of P and Q was 25. The average age of P, Q and R today is 25. Age of R after 5 years will be

a) 20 years

b) 15 years

c) 35 years

d) 40 years

Question : 43

In a class, there are 40 boys and their average age is 16 years. One boy, aged 17 years, leaving the class and another joining, the average age becomes 15.875 years. The age of the new boy is :

a) 14.5 years

b) 12 years

c) 17 years

d) 15 years

Question : 44

The average age of 30 students is 9 years. If the age of their teacher is included, the average age becomes 10 years. The age of the teacher (in years) is

a) 31

b) 27

c) 40

d) 35

Question : 45

The average age of 12 players of a team is 25 years. If the captain’s age is included, the average age increases by 1 year. The age of the captain is :

a) 38 yrs.

b) 25 yrs.

c) 26 yrs.

d) 36 yrs.