The following table shows the sales of an electronic chip over 5 years:
Find the year in which the sales are equal to the average of the sales over the 5 years.
Answer & explanation
Correct answer: option 3
Average sales over five years:
⇒ \(\frac{45 + 54 + 57 + 60 + 69}{5}\) = \(\frac{285}{5}\) = 57
Avg. of sales over 5 years = sales in year 2012