Answers

2015-10-20T21:41:14+05:30
85. if the mean of 10 students are 70 then the total sum of marks will be 70*10=700. then the sum of the marks of the 6 students ill be 6*60=360. so the total sum of marks of the 4 students ill be 700-360=340. mean= 340/4=85
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