Q. 104.6( 24 Votes )

Candidates of four schools appear in a mathematics test. The data were as follows:


If the average score of the candidates of all the four schools is 66, find the number of candidates that appeared from school III.

Answer :

Let the number of candidates from school III be P.

Given,


Average score of all schools = 66


= 66


= 66


= 66


10340 + 55P = 66P + 9768


10340 – 9768 = 66P – 55P


P = = 52


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