Average age of 55 students in a class is 21
years and average age of 25 girls-students
is 19 years. What is the average age of
boys-students in the class?
Answers
Answered by
1
Answer:
answer is 22.6
for above question
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Answered by
0
Answer:
22 2/3
Explanation:
Total age of students=55×21
=1155
Total age of girls =25×19
=475
Total age of boys =1155-475
=680
Total no of boys = Total no students-Total
no of girls
=55-25
=30
Average age of boys = Total age of boys / Total no of boys
= 680/30
= 22 20/30(mixed fraction)
=22 2/3( cancel 20 and 30)
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