Average height of 15 students of class 6 is 140 cm and average height of 10 students of class 7 is 145 cm what is the average height of the students of both the classes
Answers
Answered by
34
here is ur answer....
Attachments:
Answered by
27
The average height of the students of both the classes is 142 cm
1) Number of students in Class 6 is 15.
Average height of students = 140 cm
Sum of heights would be 140*15 = 2100 cm
2) Number of students in Class 7 is 10.
Average height of students = 145 cm
Sum of heights would be 145*10 = 1450 cm
3) Total Number of Students = 10+15 = 25
Total Sum of height = 1450 + 2100 = 3550 cm
Average height of students = 3550/25 = 142 cm
Similar questions