Q.196- The average age of 20 boys in a class is 12 years. 5 new boys are admitted to the class whose average age is 7 years. The average age of all the boys in the class becomes:
Q.197- The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. The average of the remaining two numbers is :
Q.198- If the arithmetic mean of 7, 5, 13, x and 9 is 10, then the value of x is :
Q.199- 3 years age, 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 :
Q.200- If the average of 5 consecutive integers is x then, find the average of next to next 5 consecutive integers.