 
 <prompt> Ihe ndị 400 nwere ndị ọzọ. 120 ndị na-eme dance mgbe ha na-akwado ha. 200 ndị na-eme art mgbe ha na-akwado ha. Ndị ọzọ na-eme music. Kedu echiche ndị na-eme music? <response>: ```Di na 400-120-200=80 ndi okenyezi n'akụkọ.
N'ihi ya, ndi okenyezi na-eme (80/400)*100=20% nke ndi okenyezi.

Ọ bụghị 20.``` 