A library has an average of 510 visitors on Sundays and 240 on other days. What is the average number of visitors per da…

The average temperature on Wednesday, Thursday and Friday was 25°. The average temperature on Thursday, Friday and S…

The average monthly salary of 12 workers and 3 managers in a factory was Rs. 600. When one of the manager whose salary w…

The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the…

The average weight of 3 men A, B, and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If an…

The average age of mother and her six children is 12 years, which is reduced by 5 years if the age of mother is excluded…

Mr. Joe’s family consists of six people-himself, his wife and their four children. It is known that the average ag…

The average of ten numbers is 7. If each number is multiplied by 12, then the average of the new set of numbers is :