Question

Question - 11
The average age of 3 friends is 32 years. If the age of the fourth friend is added, their
average age comes to 31 yerrs. What is the age of the fourth friend?
a) 32 years
[b] 28 years
se povren
C 24 years
[d] 26 years
12am​

Answer 1

Answer:

b is the right answer.

Step-by-step explanation:

av. age of 3 = 32

so, sum of their age = 32×3 = 96

av. age of 4 = 31

so, sum of their age = 31×4 = 124

age of 4th friend = 124-96 = 28 yrs