 <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. <yor> Nínú yàrá, ènìyàn 1 + 1 = 2 ni ilé (Charlie àti Susan). Sarah àti àwọn ọ̀rẹ́ rẹ̀ mẹ́rin wá wọlé, tá a bá fi 4 àti 1 pọ̀, a ó rí èèyàn márùn-ún. Bá a bá fi Charlie àti Susan kún un, àwa márùn-ún àti méjì á jẹ́ méje nínú yàrá náà. Níwọ̀n bó ti jẹ́ pé àwọn èèyàn mẹ́jọ ló wà nínú yàrá ìjókòó, iye àwọn èèyàn tó wà nínú ilé náà jẹ́ 8 + 7 = 15. Nítorí náà, ìdáhùn náà ni, 15. 