If 25a + 25b = 115, what is the average of a and b?

The average of 10 items was found to be 80 but while calculating, one of the items was counted as 60 instead of 50. Then…

Kunal bought 65 books for Rs. 1050 from one shop and 50 books for Rs. 1020 from another. What is the average price he pa…

The mean high temperature of the first four days of a week is 25°C whereas the mean of the last four days is 25.5&de…

The average of 7 consecutive numbers is 20. The largest of these numbers is-

The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85.…

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

A cricketer had a certain average of runs for his 64 innings. In his 65th innings, he is bowled out for no score on his …