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

Question : 21

The average age of Ram and his two children is 17 years and the average age of Ram’s wife and the same children is 16 years. If the age of Ram is 33 years, the age of his wife is (in years):

a) 32

b) 31

c) 30

d) 35

Question : 22 [SSC CGL Prelim 2004]

The average age of 5 boys is 12 years. The average age of 3 others is 16 years. The average age of all the 8 boys is :

a) 14 years

b) 13$1/2$ years

c) 13 years

d) 12$1/2$ years

Question : 23 [SSC DEO 2008]

Five years ago, the average age of P, Q and R was 25 years and seven years ago, the average age of Q and R was 20 years. The present age of P is

a) 29 years

b) 36 years

c) 21 years

d) 24 years

Question : 24 [SSC CPO 2008]

The average age of 40 students of a class is 15 years. When 10 new students are admitted, the average is increased by 0.2 year. The average age of the new students is :

a) 16 years

b) 15.2 years

c) 16.4 years

d) 16.2 years

Question : 25 [SSC CGL Prelim 2005]

The average age of 30 boys in a class is 15 years. One boy aged 20 years, left the class, but two new boys came in his place whose ages differ by 5 years. If the average age of all the boys now in the class still remains 15 years, the age of the younger newcomer is :

a) 15 years

b) 20 years

c) 8 years

d) 10 years