the mean age of 40 students is 16 years
and the age of other 60 students is
20 years.find out the mean age of all 100 students taken together?
Answers
Answered by
40
Explanation:
Sum of the ages of 40 students
= 16 × 40 = 640 years
Sum of the ages of other 60 students
= 60 × 20 = 1200 years
Sum of the ages of all 100 students
= 640 + 1200 = 1840 years
Therefore , The mean age of all 100 students
= 1840/100
= 184/10 = 18.4 years
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