(15*75 + 25x)/(15+25) = 80
Now just find x.
Total points / total students = average
Mrs. Gifford's class consists of 15 girls and 25 boys.
the class mean was 80 and the mean girl’s scores was 75. What was the mean of the boy’s scores?
2 answers
Bill, you have now posted this same question 7 times since yesterday. You received a variety of ways to get the answer.
Ms Sue even told you not to post it again, so here it is once more
Ms Sue even told you not to post it again, so here it is once more
2 answers