The average of marks obtained in 120 students was 35. If the average of passed candidates was 39 and that of failed candi- dates is 15, the number of candidates who passed the examination is:
The average of marks obtained in 120 students was 35. If the average of passed candidates was 39 and that of failed candi- dates is 15, the number of candidates who passed the examination is:
A100
B110
C120
D80
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