Question

The average age of the 6 students is 11 years. If 2 more students of age 14 and 16 years join than their average will become
A) 12years
B) 13years
C) 19years
D) 21years

Answer 1

Answer:

sum of ages of 6 students = 11×6

=66

2 more joined

sum of ages of 8 students= 66+14+16

=96

avg= 96÷8

=12

so option A

Answer 2

First off , multiply 6×11 = 66

Then add 66+14+16 = 96

Afterthat , divide 96 by 8 (6+2 students)

The answer is 12 years