Question

In a batch, the ratio of experienced employees to freshers is 2:1. The average salary of freshers is (z − 3), and the average salary of the whole batch is (z + 3). Find the average salary of experienced employees.

A z + 6 Correct Answer Incorrect Answer
B z + 5 Correct Answer Incorrect Answer
C z + 4 Correct Answer Incorrect Answer
D z + 3 Correct Answer Incorrect Answer
E z + 2 Correct Answer Incorrect Answer

Solution

Let the number of experienced and freshers be '2a' and 'a', respectively.
Total salary of the batch = 3a × (z + 3) = 3az + 9a
Total salary of freshers = a × (z − 3) = az − 3a
So, total salary of experienced = (3az + 9a) − (az − 3a) = 2az + 12a
Therefore, average salary of experienced = (2az + 12a) / 2a = (z + 6)

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