 <translate> 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. <yor> Ìbéèrè: Nọ́mbà àwọn akẹ́kọ̀ọ́ tó kéré ní kíláàsì kan jẹ́ 2/5 nínú iye akẹ́kọ̀ọ́. Bí àwọn akẹ́kọ̀ọ́ tó ga bá jẹ́ 90, tí iye akẹ́kọ̀ọ́ tó wà ní kíláàsì náà sì jẹ́ irínwó [400], wá iye akẹ́kọ̀ọ́ tó ga lápapọ̀. Ìṣàn ìmọ̀lára: Iye àwọn akẹ́kọ̀ọ́ tó kéré ní kíláàsì jẹ́ 2 / 5 * 400 = 160. Àpapọ̀ iye àwọn akẹ́kọ̀ọ́ tó kéré àti tó ga jẹ́ 160 + 90 = 250. Níwọ̀n bí àwọn akẹ́kọ̀ọ́ tó wà ní kíláàsì náà ti jẹ́ irínwó, iye àwọn akẹ́kọ̀ọ́ tí gígùn wọn jẹ́ ọ̀rìnlénírínwó - àádọ́ta lé ní àádọ́ta = àádọ́jọ. 