 <translate> Q: The average of 9 observations was 9, that of the 1st of 5 being 10 and that of the last 5 being 8. What was the 5th observation?
Options:
(A) 9
(B) 8
(C) 7
(D) 6
(E) 2
A: (A) <yor> Ìbéèrè: Ìpíndọ́gba àwọn àyẹ̀wò mẹ́sàn-án náà jẹ́ mẹ́sàn-án, èyí ti àkọ́kọ́ lára márùn-ún náà jẹ́ mẹ́wàá, èyí tí àwọn márùn-ún tó kẹ́yìn náà jẹ́ mẹ́jọ. Kí ni ohun kẹta tí wọ́n kíyè sí? Àwọn àyè: (A) 9 (B) 8 (C) 7 (D) 6 ì (E) Ì2 A: (A) 