 
 <translate> Twice the number of participants in 2018 is 150 participants x 2 = 300 participants. The number of participants in 2019 was 300 participants + 20 participants = 320 participants. Half the number of participants in 2019 is 320 participants / 2 = 160 participants. The number of participants in 2020 was 160 participants - 40 participants = 120 participants. There were 320 participants - 120 participants = 200 more participants in 2019 than in 2020. So the final answer is 200. <ibo> Ugboro abụọ nke ọnụ ọgụgụ ndị sonyere na 2018 bụ ndị sonyere 150 x 2 = ndị sonyere 300. Ọnụ ọgụgụ ndị sonyere na 2019 bụ ndị sonyere 300 + ndị sonyere 20 = ndị sonyere 320. Ọkara ọnụ ọgụgụ ndị sonyere na 2019 bụ ndị sonyere 320 / 2 = ndị sonyere 160. Ọnụ ọgụgụ ndị sonyere na 2020 bụ ndị sonyere 160 - ndị sonyere 40 = ndị sonyere 120. Enwere ndị sonyere 320 - ndị sonyere 120 = ndị sonyere 200 karịa na 2019 karịa na 2020. Ya mere, azịza ikpeazụ bụ 200. 