Final answer:
By multiplying ¾ of an hour by the 5 days that Oliver practices each week, it is determined that he practices a total of 3.75 hours per week on the piano.
Step-by-step explanation:
Oliver practices his piano for ¾ of an hour each day for five days a week. To find out how long he practices in a week, we need to multiply ¾ by the number of days he practices, which is 5.
Total practice time in a week = ¾ hour/day × 5 days/week = ¾ × 5
To calculate this, you convert ¾ to a decimal, which is 0.75, and then multiply by 5:
Total practice time in a week = 0.75 hour/day × 5 days/week = 3.75 hours/week.
Thus, Oliver practices a total of 3.75 hours per week on the piano.