Question

The average age of eight girls is 12 years. If
a five year old girl left, then what will be the
average age of rest left 7 girls?​

Answer 1

Answer:

Answer is 13

Explanation given below

Please mark as brainliest answer

Answer 2

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

= 12 Years