To find out how many more grams of potassium the athlete needs to reach the recommended amount, you should first calculate the total potassium she already consumed from the banana and the orange juice, and then subtract that total from the recommended amount of 4.5 grams.
So, the correct approach is:
- add 0.54 + 0.372 and subtract the sum from 4.5
Here's the step-by-step process:
-
Calculate the total potassium consumed:
\(0.54 + 0.372 = 0.912\) grams -
Subtract this total from the recommended amount:
\(4.5 - 0.912 = 3.588\) grams
This means the athlete needs 3.588 more grams of potassium to reach the recommended daily intake.