The table shows the sales of an electronic chip over five years.
In which year are the sales equal to the average of the sales over the five years?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 2012
The average sales are the total of the five years divided by 5; the year whose sales equal this value is the answer.
Total \(=45+54+57+60+69=285\) thousand rupees
Average \(\displaystyle=\frac{285}{5}=57\) thousand rupees
Sales of 57 thousand rupees are in 2012.