 
 <translate> Lizzy: There are 19 students in the 3rd grade and twice that number in the 4th grade. There are 10 boys and 19 girls in the 2nd grade. How many students are there in total?.
Me: Hmmm, let me think. I think this is the detailed solution: <ibo> Lizzy: E nwere ụmụ akwụkwọ iri na itoolu na klas nke atọ na okpukpu abụọ nke ọnụ ọgụgụ ahụ na klas nke anọ. E nwere ụmụ nwoke iri na ụmụ nwanyị iri na itoolu na klas nke abụọ. Ụmụakwụkwọ ole ka ha dị? Mụ: Hmmm, ka m chee echiche. Echere m na nke a bụ ihe ngwọta zuru ezu: 