Question

The average number of students in five classes is 29. If the average number of students in class I, III and V is 30. Then the total number of student in II and IV classes are

• A. 45
• B. 50
• C. 55
• D. 60

Answer 1

Answer:

C. 55

Total number of students in 5 classes = 29 x 5 = 145 Total number of students in 3 classes = 30 x 3 = 90 Total number of students in 2 classes = 145 - 90 = 55