A patient's coffee cup holds 250 mL and 75 mL remains. How much coffee did the patient drink?

To determine how much coffee the patient drank, you start by calculating the total amount of coffee initially in the cup, which is 250 mL. If 75 mL remains in the cup, you can find out how much was consumed by subtracting the remaining amount from the total.

Here’s the calculation:

250 mL (total) - 75 mL (remaining) = 175 mL drank.

This shows that the patient drank 175 mL of coffee. The process involves straightforward arithmetic, ensuring that you accurately account for the initial amount and what is left to find the amount consumed. This reinforces the understanding of volume measurement and subtraction in practical scenarios, such as monitoring fluid intake in a healthcare setting.