78. 100 students appeared for an examination. The rosults of those who failed e given below: Marks No. of Students : If the average marks of all students were 68.6, find out average marks of those who 10 15 20 25 30 Total 2 30 8 7. 3 Dassed.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 4CR
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* 78. 100 students appeared for an examination. The results of those who failed
e given below:
Marks
No. of Students
If the average marks of all students were 68.6, find out average marks of those who
10 15
20
25
30
Total
4
6 8
7.
30
Dassed.
Transcribed Image Text:* 78. 100 students appeared for an examination. The results of those who failed e given below: Marks No. of Students If the average marks of all students were 68.6, find out average marks of those who 10 15 20 25 30 Total 4 6 8 7. 30 Dassed.
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