 
<translate> Lizzy: Mgbe ha mebichara iwu otu ahụ, onye na-elekọta otu ahụ wepụrụ mmadụ iri abụọ so n'otu ìgwè dị na Facebook. Ọ bụrụ na onye ọbụla zipụrụ ozi 50 kwa ụbọchị n'otu ahụ ma ọnụọgụgụ ndị otu nọ n'otu ahụ bụ 150 tupu onye nchịkwa ewepụ ụfọdụ, gbakọọ ọnụ ọgụgụ ozi ndị fọdụrụnụ ga-eziga n'otu izu. Mụ: Hmmm, ka m chee echiche. Echere m na nke a bụ ihe ngwọta zuru ezu: <eng> Lizzy: After violating the group's policies, 20 members of a Facebook group were removed by the group's admin. If each member posted 50 messages per day in the group and the number of members in the group was 150 before the admin removed some, calculate the total number of messages the remaining members would send in a week..
Me: Hmmm, let me think. I think this is the detailed solution: 