The mean marks of 10 students in a class is 70. The sendents are divided into two
groups of 6 and 4 respectively. If the mean marks of the first group is 60, what will be
the mean marks of the second group?
Answers
Answered by
2
Step-by-step explanation:
total mean=70×10=700
mean of the first group=60
total Mark's of the first group=60×6=360
total Mark's of the second group =700-360=340
mean Mark's of second group =340/4=85
Similar questions