Average Questions and Answers for Competitive Exams

Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number is 20 then the first number is 

Total weekly emoluments of the workers of a factory is 1534. Average weekly emolument of a worker is 118. The number of workers in the factory is:

A man bought 13 articles at 70 each, 15 at 60 each and 12 at 65 each. The average price per article is 

The average of 30 numbers is 40 and that of the other 40 numbers is 30. The average of all the numbers is-

The average of the largest and smallest 3 digit numbers formed by 0, 2 and 4 would be 

The average of 20 numbers is 15 and the average of first five is 12. The average of the rest is

The average of 30 results is 20 and the average of other 20 results is 30. What is the average of all the results? 

There are two groups A and B of a class, consisting of 42 and 28 students respectively. If the average weight of group A is 25 kg and that of group B is 40 kg, find the average weight of the whole class. 

The average of 30 numbers is 15. The average of the first 18 numbers is 10 and that of the next 11 numbers is 20. The last number is

Out of 20 boys, 6 are each of 1 m 15 cm height, 8 are of 1 m 10 cm and rest of 1 m 12 cm. The average height of all of them is