Question

TYPE 1

Average age of company A is 23 years and average age of both companies A and B is 15 years. If the ratio of number of employees in company A and B is 3:8, 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
E 6 years Correct Answer Incorrect Answer

Solution

Average of Company B = (15 × 11 - 3 × 23)/8   => (165 - 69)/8 = 12 years

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