The average annual income (in Rs.) of certain agricultural workers is S and that of other workers is T. The number of ag…

Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average by 8 r…

Average weight of 25 students of a class is 50 kg. If the weight of the class teacher is included , the average is incre…

The average of runs scored by a cricketer in his 99 innings is 99. How many runs will he have to score to his 100th inni…

The mean of 100 observations was calculated as 40. It was founder later on that one of the observation was misread as 83…

The average of 25 results is 18. The average of first 12 of those is 14 and the average of last 12 is 17. What is the 13…

A student finds the average of 10 positive integers. Each integer contains two digits. By mistake, the boy interchanges …

The average of the first five multiples of 9 is: