1 
3 years back average age of A and B was 32. Today average age of A,B and C is 30. What is the age of C?


Answer:
Option (d) 
2 
Average age of 7 family members is 75 years. But average age of 6 of them is 74 years 6 months. What is the age of the 7th family member?


Answer:
Option (b) 
3 
Average age of a group of 30 boys is 16 years. A boy of age 19 leaves the group and a new boy joins the group. If the new average age of the group is 15.8 years, find the age of the new boy.


Answer:
Option (c) 
4 
The average age of a group of 4 friends is 36 years. The youngest friend amongst them is 6 years old. What was the average age of the group at the time of the birth of the youngest friend?


Answer:
Option (d) 
5 
The average of 20 numbers is zero. How many of them may be greater than zero, at the most?


Answer:
Option (d) 
6 
The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?


Answer:
Option (a) 
7 
What is the average of first 9 multiples of 3?


Answer:
Option (c) 
8 
Without considering the salary of the boss, the average salary reduces by Rs. 1000. What will be salary of boss if average salary of 11 employees and the boss is Rs. 18000?


Answer:
Option (d) 
9 
A library has an average of 510 visitors on Sundays and 240 on other days. What is the average number of visitors per day in a month of 30 days beginning with a Sunday?


Answer:
Option (b) 
10 
Average age of A and B is 30 years, that of B and C is 32 years and the average age of C and A is 34 years. The age of C is


Answer:
Option (d) 