 
<translate> Ajụjụ: Ọnụ ọgụgụ ụmụ akwụkwọ dị mkpụmkpụ n'otu klas bụ 2/5 nke ọnụ ọgụgụ ụmụ akwụkwọ. Ọ bụrụ na e nwere ụmụ akwụkwọ 90 toro ogologo, klas ahụ enweekwa ụmụ akwụkwọ 400, gbakọọ ọnụ ọgụgụ ụmụ akwụkwọ ndị toro ogologo n'ogologo. Mmetụta uche: Ọnụ ọgụgụ ụmụ akwụkwọ dị mkpụmkpụ n'ime klas bụ 2 / 5 * 400 = 160. Ọnụ ọgụgụ ụmụ akwụkwọ ndị dị obere na ndị toro ogologo bụ 160 + 90 = 250. Ebe ọ bụ na e nwere ụmụ akwụkwọ 400 n'otu klas, ọnụ ọgụgụ ụmụ akwụkwọ ndị nkezi ha toro ogologo bụ 400 - 250 = 150. <eng> Question: The number of short students in a class is 2/5 of the total number of students. If there are 90 tall students, and the class has 400 students, calculate the total number of students with average height.
Stream-of-consciousness: The number of short students in the class is 2 / 5 * 400 = 160. The total number of short and tall students is 160 + 90 = 250. Since there are 400 students in the class, the number of students with average height is 400 - 250 = 150. 