AM of three numbers

The number 2010 can be written as the sum of 3 consecutive natural numbers. Determine the arithmetic mean of these numbers.

Correct answer:

x =  670

Step-by-step explanation:

$$\begin{gathered} 2010=a+(a+1)+(a+2) \\ 3a=2007 \\ a=669 \\ x=a+1=669+1=670 \end{gathered}$$

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