Question

6. The average age of 32 students in a class is
15 years. If two students leave the class, the
average age drops to 14.9 years. What is the
average age of the two students who left?

answer haa 16.5 years​

Answer 1

Answer:

Average age of 30 students in a class = 12 years

5 students = 10 years

Another 5 students = 14 years

remaining student= 30-5-5=20

let's assume average age of 20 student=x

Total age of all student=average age* total no of student

30∗

12=

5∗

10+

5∗

14+

20∗

x

360=

50+

70+

20x

360=

120+

20x

240=

20x

x=

12

Answer (C) 12 Years

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