Final answer:
Mr. Su can drink 75 mL of fluid per hour if he is limited to 1800 mL of fluid every 24 hours, which is calculated by dividing the total fluid intake allowed by the number of hours in a day.
Step-by-step explanation:
To calculate how much fluid Mr. Su can have per hour if he can only take 1800 mL of fluid every 24 hours, you would divide the total allowed fluid intake by the number of hours in a day. The math operation used here is simple division.
Identify the total fluid intake allowed: 1800 mL.Identify the total time frame: 24 hours.
Divide the total fluid intake by the total time frame to find the hourly intake:
1800 mL ÷ 24 hours = 75 mL/hour.
Therefore, Mr. Su can have 75 mL of fluid per hour.