the answer is .86 hours per day. you need to add the amount of time she spends practicing for every day of a seven day period, 1.5+ 1.5+ 1.5+ 1.5+0+0+0= 6, now you need to divide by how many days are in the week (7), so 6/7 = .85714285714, which looks good rounded up as .86 (hrs p/ day)