Question

The average age of A and B is 25 years. If'C were replace A, the average would be 24 and if were to replace B, the average would be 26 years. What is the age of"C"?
1) 25 year 2) 23 year 2727 years 4) 24 year​

Answer 1

Answer:

(A+B)/2=25>>>A+B=50

if c replace A is, average is 24

so,

(C+B)/2=24>>>C+B=48---(1)

if c replace B, average is 26

(A+C)/2=26>>>A+C=52--(2)

Adding both 1&2 is

C+B+A+C=100

2C+(A+B)=100

2C+50=100 here A+B=50

2C=50

C=25.

so answer is option 1)25 year