 
<translate> Tambaya: Yawan ƙananan ɗalibai a cikin aji shine 2/5 na yawan ɗalibai. Idan akwai ɗalibai 90 masu tsayi, kuma aji yana da ɗalibai 400, ƙididdige yawan ɗalibai da matsakaicin tsayi. Hanyoyin hankali: Yawan ƙananan ɗalibai a cikin aji shine 2 / 5 * 400 = 160. Adadin ƙananan dalibai da masu girma shine 160 + 90 = 250. Tun da akwai dalibai 400 a cikin aji, yawan ɗalibai da matsakaicin tsayi shine 400 - 250 = 150. <eng> 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. 