Candidates of four schools appear in a mathematics test. The data were as follows:
Schools | No. of Candidates | Average Score |
I II III IV | 60 48 Not available 40 | 75 80 55 50 |
If the average score of the candidates of all the four school is 66, find the number of candidates that appeared from school III.
Let no. of students appeared from school III = x
Schools | No. of candidates | Average score |
I | 60 | 75 |
II | 48 | 80 |
III | x | 55 |
IV | 40 | 50 |
Given, Average score of all schools = 66
= 66
= 66
= 66
= 66
10340 – 9768 = 66x – 55x
11x = 572
x =
= 52
Therefore, no. of candidates appeared from school (III) are 52