Free Practice Questions for Average in Maths

Practice questions here, for every subject and every exam. Unlimited questions for unlimited attempts, given with answers and explanations.


Question 41:

The average of 9 numbers is 51 . Average of three of them is 49 and the average of four of the remaining numbers is 46 . What is the average of the remaining numbers?

Question 42:

4 years ago, the average age of a family of 4 members was 19 years. A baby having been born, the average age of the family is the same today. Find the present age of the baby.

Question 43:

The average of three numbers a, b and c is 63 . If the first number ' a ' is three-fourth of the sum of b and c, then the first number ' a ' is equal to:

Question 44:

If the average of the numbers $8,5,3, k,(k+1)$ is 7 , then what is the value of $k$ ?

Question 45:

The average price of 10 books is ₹ 150 , while the average price of 8 of these books is ₹ 135. Of the remaining 2 books, if the price of one book is 40% more than the price of the other book, then what is the price of the costlier of these two books?

Question 46:

The average of 19 numbers is 58 . The average of the first 12 numbers is $63.6$ and the average of the last 8 numbers is $55.1$. If the 12 th number from the beginning is excluded, then what is the average of the remaining numbers?

Question 47:

The average  marks of 35 students in a class examination is 46. Later, it was found that the marks of two students each were read as 33 instead of 23, and that of one student was read as 30 instead of 36. Find the actual average marks of the students of the class.

Question 48:

A library has an average of 502 visitors on Sundays, 475 on Saturdays and 340 on weekdays. What is the average number of visitors per day in a month of 30 days beginning with a Sunday?

Question 49:

The average weight of a certain number of persons in a group is 78 kg. If 4 persons having average weight 80.75 kg leave the group, the average weight of the remaining persons becomes 77.725 kg. The number of persons, initially, is:

Question 50:

The average weight of 14 boys in a class is 40.25 kg and that of the remaining 10 boys is 35.15 kg. Find the average weight of all the boys in the class.

Question 51:

The average run rate of a cricketer in 48 innings is 33 . His highest score exceeds his lowest score by 144 runs. If these two innings are excluded, the average run rate of the remaining 46 innings is 30 . What is the highest score of the player?

Question 52:

The average salary of all the employees in a workshop is ₹ 18,000. The average salary of 7 technicians is ₹ 24,000 and that of the remaining employees is ₹ 12,000. What is the total number of employees in the workshop?

Question 53:

The average of 51 numbers is 52. The average of the first 28 numbers is $50.5$ and the average of the last 24 numbers is $54.5$. If 28th number is dropped, then what will be the average of the remaining numbers?

Question 54:

A student scores $85 \%$ in an examination. The scores were $79,81,88$ and $94$ in $4$ subjects. Find the student's score in the 5th subject?

Question 55:

The average of the squares of four consecutive even natural numbers is 126 . The average of 8 times of the greatest number and 5 times of the smallest number is:

Question 56:

The average monthly expenditure of a man is Rs. 2,400 during the first three months, Rs. 3,500 during the next five months and Rs. 4,800 for the remaining four months. If his total saving is Rs. 3,500 during the entire year, then what is his average monthly income (in Rs)?

Question 57:

In an exam, the average marks of 20 students is 70 . Afterwards, it is found that the marks of 2 students are taken wrong as 54 and 74 instead of 64 and 84 . Find the correct average.

Question 58:

In an exam, the average marks of 40 students is 75. Afterwards, it is found that the marks of 2 students are taken wrong as 56 and 38 instead of 65 and 69. Find the correct average.

Question 59:

A grocer has a sale of Rs. 2,000 , Rs. 2,500 , Rs. 3,250 and Rs. 4,250 in 4 months. How much should be  his sale in the 5 th month  to get an overall average of Rs. 3,500? 

Question 60:

The average scores of A, B and C in a test is 78 and that of C, D and E is 52. The average score of E and F is 48 and that of E and C is 60. What is the average score of A, B, C, D, E and F?