1.

The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ratio of the number of boys to the number of girls in the class is :

A) 1:2

B) 2:3

C) 3:4

D) 3:5

2.

In a school with 600 students, the average age of the, boys is 12 years and that of the girls is 11 years.- If the average age of the school is 11 years 9 months, then the number of girls in the school is :

A) 150

B) 250

C) 350

D) 450

3.

A certain factory employed 600 men and 400 women and the average wage was Rs. 25.50 per day. If a woman got Rs. 5 less than a man, then what are their daily wages ?

A) Man : Rs. 25; Woman : Rs. 20

B) Man • Rs. 27.50, Woman : Rs. 22.50

C) Man : Rs. 30, Woman : Rs. 25

D) Man : Rs. 32.50, Woman : Rs. 27.50

4.

After replacing an old member by a new member, it was found that the average age of five members of a'club is the safrie as it was 3 years ago. What is the difference between the ages of the replaced and the new member ?

A) 2 years

B) 4 years

C) 8 years

D) 15 years

5.

The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is :

A) 35 years

B) 40 years

C) 50 years

D) None of these

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