Question

Average age of company A is 20 years and average age of both companies A and B is 14 years. If the ratio of number of employees in company A and B is 1:2, then what is the average age of company B?

A 10 years Correct Answer Incorrect Answer
B 11 years Correct Answer Incorrect Answer
C 8 years Correct Answer Incorrect Answer
D 12 years Correct Answer Incorrect Answer

Solution

Average of Company B = (14 × 3 - 1 × 20)/2   => (42 - 20)/2 = 11 years

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