Study the given graph and answer the question that follows.

By what percentage (approximately)is the average number of vehicles of type B produced in 2014, 2016 and 2018 less than the number of vehicles of type A produced in 2017?

20.8

Average number of vehicles of type B produced in 2014, 2016 and 2018

= \(\frac{180+225+450}{3}\)

= \(\frac{ 855}{3}\)

= 285

Number of vehicles of type A produced in 2017 = 360

Required percentage = \(\frac{360 - 285  }{360}\) × 100

= \(\frac{ 75  }{360}\) × 100

= 20.8%