Study the given graph and answer the question that follows.
The average number of motorcycles sold by dealers B and D in 2019 is what percentage less than the average number of motorcycles sold by dealers A, C and E in 2020 (correct to one decimal place)?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 14.3%.
The average number of motorcycles sold by dealers B and D in 2019 = (180 + 300)/2 = 240 hundreds
The average number of motorcycles sold by dealers A, C, and E in 2020 = (240 + 200 + 400)/3 = 280 hundred
Required percentage = (280 - 240)/280 × 100 = 14.3% (approx)