 
 <translate> In the bedroom, there are 1 + 1 = 2 people in the house (Charlie and Susan). Sarah and four friends then entered, a total of 4 + 1 = 5 people. Together with Charlie and Susan, there are now 5 + 2 = 7 people in the bedroom. Since there are 8 more people in the living room, the total number of people in the house is 8 + 7 = 15.
Therefore, the answer is 15. <ibo> N'ime ime ụlọ, enwere 1 + 1 = mmadụ 2 n'ụlọ (Charlie na Susan). Mgbe ahụ, Sarah na ndị enyi ya anọ batara, ha niile dị mmadụ 4+1=5. Tụkwasị na Charlie na Susan, e nwere mmadụ 5 + 2 = mmadụ 7 n'ime ụlọ ihi ụra ahụ. Ebe ọ bụ na e nwere mmadụ asatọ ọzọ n'ime ụlọ ahụ, ọnụ ọgụgụ mmadụ nile nọ n'ụlọ ahụ bụ 8 + 7 = 15. N'ihi ya, azịza ya bụ 15. 