Question : The average of the marks of 25 students in a class, in an examination was calculated to be 19. Later, the teacher realized that the marks of two students were taken as 18 and 19, respectively, instead of 14 and 15. Find the new actual average marks of the class.

Option 1: 17.43

Option 2: 16.56

Option 3: 18.68

Option 4: 17.65

Question : Two numbers are, respectively, 10% and 25% more than the third number. The ratio of the two numbers is:

Option 1: 22 : 25

Option 2: 19 : 25

Option 3: 23 : 25

Option 4: 18 : 25

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

Option 1: 70

Option 2: 71

Option 3: 72

Option 4: 73

Question : The average mark of 60 students in a class is 62. The average marks of boys and girls in that subject are 60 and 65, respectively. The number of boys in the class is:

Option 1: 36

Option 2: 25

Option 3: 41

Option 4: 34

Question : The average score of 40 students in an examination was 25. It was later found that the marks of one student had been wrongly entered as 73 instead of 37. What is the value of the correct average?

Option 1: 24.3

Option 2: 24.1

Option 3: 24.5

Option 4: 24.7

Question : While finding the average marks of a class, Vikas’s marks were wrongly entered as 98 in place of 89. Due to this error, the average marks of the class were 0.25 more than the actual average. What is the number of students in the class?

Option 1: 32

Option 2: 38

Option 3: 34

Option 4: 36