 
<translate> Sa'o'i 7.5 = minti 450. Kwanaki biyu = 2 * 86 = mintuna 172. 450 - 172 = mintuna 278. Adah ta yi atisaye na tsawon minti 278 a sauran ranakun. Amsar ita ce 278. <eng> 7.5 hours = 450 minutes. Two days = 2 * 86 = 172 minutes. 450 - 172 = 278 minutes. Adah practiced a total of 278 minutes on the other days. So the answer is 278. 