 
 <translate> Reasoning: If the class has 300 students, there are 40 / 100 * 300 = 120 smoking students. In a year, 70% of the smoking students are hospitalized from smoking - related complications, a total of 70 / 100 * 120 = 84 students. The number of smoking students who've not been hospitalized from smoking - related complications is 120 - 84 = 36. <ibo> Ntụgharị uche: Ọ bụrụ na klas ahụ nwere ụmụ akwụkwọ 300, e nwere ụmụ akwụkwọ 40 / 100 * 300 = 120 na-ese siga. N'ime otu afọ, pasent 70 nke ụmụ akwụkwọ ndị na - ese siga na - aga ụlọ ọgwụ n'ihi nsogbu ndị ise siga na - akpata, ya bụ, 70 / 100 * 120 = ụmụ akwụkwọ 84. Ọnụ ọgụgụ ụmụ akwụkwọ na - ese siga ndị a na - akpọbataghị n"ụlọ ọgwụ n'ihi nsogbu ndị ise siga kpatara bụ 120 - 84 = 36. 