The following figure shows the percentage growth in units of fans and coolers sold in some years. What is the difference between the averages of the growth rate in coolers and fans?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 34.
Given that
The total growth rate in sales of coolers = 60 + 72 + 54 + 45 = 231
The average growth rate in sales of coolers = 231/4
The total growth rate in sales of fans = 27 + 18 + 30 + 20 = 95
The average growth rate in sales of fans = 95/4
Hence, The required difference = 231/4 - 95/4 = 136/4 = 34