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Average Questions and Answers with Solutions

Average is one of the most frequently asked topics in quantitative aptitude. Competitive exams like SSC, Bank PO, CAT, UPSC, and Railways often include Average Questions to test problem-solving and...
1.

The average of 15 numbers is 42. If two numbers 36 and 48 are removed, what is the average of the remaining numbers?

2.

A student's average score in 8 subjects is 78. If the student scored 65 in the 9th subject, what is the new average?

3.

The average weight of 25 students in a class is 52 kg. When a new student joins, the average becomes 53 kg. What is the weight of the new student?

4.

The average of three numbers is 24. If the first number is increased by 6 and the second number is decreased by 4, what should be done to the third number to keep the average unchanged?

5.

A car travels 240 km in 4 hours and then 180 km in 3 hours. What is the average speed for the entire journey?

6.

The average age of a family of 5 members is 28 years. If the age of the youngest member is 8 years, what is the average age of the remaining 4 members?

7.

In a cricket team, the average score of 11 players is 45 runs. If the captain scored 20 runs more than the average, what is the captain's score?

8.

The average of 20 numbers is 35. If 5 numbers with an average of 40 are removed, what is the average of the remaining numbers?

9.

A class has 30 students. The average height of boys is 160 cm and that of girls is 150 cm. If the overall average height is 156 cm, how many boys are there in the class?

10.

The average of first 10 natural numbers is:

11.

A batsman has an average of 40 runs after 10 innings. How many runs should he score in the 11th innings to increase his average to 42?

12.

The average salary of all employees in a company is ₹25,000. The average salary of officers is ₹45,000 and that of clerks is ₹20,000. If there are 80 employees in total, how many officers are there?

13.

A person covers a distance at 40 km/h and returns at 60 km/h. What is his average speed for the entire journey?

14.

The average of 5 consecutive odd numbers is 35. What is the largest of these numbers?

15.

In a school, the average age of teachers is 40 years and that of students is 15 years. If there are 20 teachers and 200 students, what is the average age of all people in the school?

16.

The average of 6 numbers is 42. If one number is excluded, the average becomes 40. What is the excluded number?

17.

A shopkeeper sells 3 items at ₹120, ₹150, and ₹180 respectively. If he wants the average selling price to be ₹160, at what price should he sell the 4th item?

18.

The average of 15 numbers is 27. If the average of the first 8 numbers is 25 and that of the last 8 numbers is 30, what is the 8th number?

19.

A train travels 300 km at 60 km/h, then 200 km at 80 km/h, and finally 100 km at 50 km/h. What is the average speed of the train?

20.

The average marks of a class of 30 students is 75. If 5 students with an average of 60 leave the class, what is the new average of the remaining students?

21.

A man buys 10 kg of rice at ₹40 per kg, 15 kg at ₹45 per kg, and 20 kg at ₹50 per kg. What is the average price per kg?

22.

In a factory, the average daily production for the first 10 days was 200 units. For the next 15 days, it was 240 units. What was the average daily production for all 25 days?

23.

The average of 4 consecutive even numbers is 15. What is the sum of the largest and smallest of these numbers?

24.

A library has books on 3 subjects. There are 40 Math books with an average price of ₹250, 30 Science books with an average price of ₹300, and 20 English books with an average price of ₹200. What is the average price of all books?

25.

The average temperature for the first 4 days of a week was 30°C. For the next 3 days, it was 35°C. What was the average temperature for the entire week?