Ashifur August 8, 2023 - 16:36
Problem: A is two years older than B, who is twice as old as C. If the average age of the three is 9 years, how old is B?

View all: ONE BANK LTD | PROBETIONARY OFFICER | WRITTEN QUESTION SOLVE(MATH) | 2008

Correct Answer: 10

Explanation:

Let, the age of C = x

The age of B = 2x

The age ofA =2x+ 2

According to the question,

$\frac{x+2x+2x+2}{3}=9$

=> 5x+ 2 =27

=> 5x=27—2

=> 5x=25

=> x=5

Now, Age of B will be = 2x years =2×5 =10

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