Question

subjective
1. The average age of a class 30 student is 13
years. The outage age q 18 bludents out of
them is 15 years . Find the average age of the
remaining students​

Answer 1

Answer:

10 years

Step-by-step explanation:

Average age of 30 students in a class = 13 years 390

Sum of their ages = (30 x 13 ) years years

Out of them, average age of 18 students

= 15 years

Sum of the ages of 18 students = (18 x 15) = years = 270 years

Then,

Remaining number of students = (30 - 18) = = 12

Sum of the ages of 12 students = 390 - 270 = 120 years

Then,

Average age of remaining 12 students = 120/12 years = 10 years =

HOPE IT HELPS