 
 <translate> 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. <ibo> Awa 7.5 = nkeji 450. Ụbọchị abụọ = 2 * 86 = nkeji 172. 450 - 172 = nkeji 278. Adah ji ngụkọta nke minit 278 mee ihe n'ụbọchị ndị nke ọzọ. Ya mere azịza ya bụ 278. 