GMAT Problem Solving (PS) | Re: At a certain company, the average (arithmetic mean) salary of 10 of

Since every number is very round, therefore, we can easily reduce to case to one digit number for employees and two digit numbers for income and just multiply to a 1000 when the final average is gotten.

\(\frac{1*30+3*40+2*60}{6} = \frac{270}{6}=45 * 1000\)

Therefore, option C

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