Question : The average of 100 observations was calculated as 35. It was found later, that one of the observations was misread as 83 instead of 53. The correct average is:

Question : The average of 100 observations was calculated as 35. It was found later, that one of the observations was misread as 83 instead of 53. The correct average is:

Question : The average marks of 17 students in an examination was calculated as 71. However, it was later found that one student's mark had been wrongly entered as 65 instead of 56 and another as 24 instead of 50. The correct average is:

Question : The average mark obtained by 120 students in an examination is 50. If the average mark of passed students is 70 and the average mark of the failed students is 30, then what is the number of students who passed the examination?

Question : The ratio of the number of men to the number of women in an office is 2 : 3. If the average weight of the men and the women in the office are 56 kg and 51 kg, respectively, find the average weight of the employees in the office (in kg).