Average of 8 numbers is 80. If average of first four and last two numbers is 90 and 60, respectively then find the fifth number given that ratio of fift...
In an exam of 100 marks, the average marks of a class of 38 students are 72. If the top 3 scorers of the class leave, the average score falls “dow...
A cricketer scored an average of 80 runs per match in the first 22 matches. In his next 8 matches, he scored runs with an average of ‘x’ runs per ma...
The average marks of 35 Spanish students in a mathematics exam is 75. If the marks of their teacher are included, the average increases by 1. Find the...
A park has an average of 140 visitors on Sundays and 80 on other day. The average number of visitors in a month of 30 days starting with Sunday is
In a class of 40 students, the average weight of the class is 65 kg, but when one of the students left from the school and 6 new ...
The average weight of 12 players in a team is increased by 1/3 kg, when one of the players whose weight is 55 kg is replaced by another player. What is ...
Find the average of all the numbers between 9 and 31, which are divisible by 5?
In a classroom, the average score of 15 students on a test is 44 points. If 5 new students, each with an average score of 'x' points, join the class, an...
The average age of six members of a family is 40 years. If the age of a guest is included, then the average age increases by 12.5%. What is the age (in ...
