Answer: John works a total of 45 hours per week.
Explanation:
John works a total of 9.75 hours a day, minus his 45 minute lunch. Since he doesn't get paid for his lunch, you will subtract 45 minutes off of each day. He will then work a total of 45 hours per week with 9 hours per day.
9.75 - .75 = 9
9 ×5= 45