CBSE Class 10 Answered
Candidates of four schools appear in a mathematics test. The data is as follows:
Schools
No. of candidates
Average score
I
60
75
II
48
80
III
Not available
55
IV
40
50
If the mean score of all four schools is 66, find the number of candidates who appeared from School III.
Asked by Topperlearning User | 06 Nov, 2017, 01:05: PM
Expert Answer
Let the number of candidates who appeared from school III be m.
Thus, we have
|
|
xifi
|
75
|
60
|
4500
|
80
|
48
|
3840
|
55
|
m
|
55 m
|
50
|
40
|
2000
|
|
148+m
|
10340+55m
|
Answered by | 06 Nov, 2017, 03:05: PM
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