40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each wor…

The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest ?

There were 24 students in a class. One of them, who was 18 years old, left the class and his place was filled up by a ne…

The average score of a class of boys and girls in an examination is A. The ratio of boys and girls in the class is 3 : 1…

The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these…

The average of 9 observations was found to be 35. Later on, it was detected that an observation 81 was misread as 18. Th…

In a pre school, the average weight of 30 girls in a class among 50 students is 16 kg and that of the remaining students…

In a 20 over match, the required run rate to win is 7.2. If the run rate is 6 at the end of the 15th over, the required …