 
 <translate> Lizzy: A company is hosting a seminar. So far, 30 attendees from company A have been registered; company B has twice the number of attendees of company A; company C has 10 more attendees than company A; company D has 5 fewer attendees than company C. If a total of 185 attendees have registered, how many attendees who registered are not from either company A, B, C or D?.
Me: Hmmm, let me think. I think this is the detailed solution: <ibo> Lizzy: Otu ụlọ ọrụ na-enwe nzukọ ọmụmụ ihe. Ka ọ dị ugbu a, e debanyela aha mmadụ iri atọ sitere na ụlọ ọrụ A; ụlọ ọrụ B nwere okpukpu abụọ nke ndị bịara ụlọ ọrụ A; ụlọ ọrụ C nwere mmadụ iri karịa ụlọ ọrụ A; ụlọ ọrụ D nwere mmadụ ise pere mpe karịa ụlọ ọrụ C. Ọ bụrụ na ngụkọta nke ndị bịara 185 edebanyela aha, ole n'ime ndị bịaranụ edebanyela aha abụghị ndị ụlọ ọrụ A, B, C ma ọ bụ D? Mụ: Hmmm, ka m chee echiche. Echere m na nke a bụ ihe ngwọta zuru ezu: 